The plus sign + means to add.

3 + 2 = 5 says three plus two equals five or three and two is five.

The sum is 5.

Exercise One

Check out your addition facts by doing this exercise as quickly as possible without counting. The highest total or sum (what the numbers add up to) for these number facts is 20. Check your work using the answer key at the end of the exercise. Then, make a list of any addition facts you do not know or which are slow – practice them. If you feel you need more practice, see your instructor.

1. $\begin{array}[t]{rr}&6 \\+& 7\\ \hline&13\end{array}$
2. $\begin{array}[t]{rr}&8\\+& 3\\ \hline&11\end{array}$
3. $\begin{array}[t]{rr}&4\\ +& 2\\ \hline\\ \end{array}$
4. $\begin{array}[t]{rr}&8\\ + &7 \\ \hline\\ \end{array}$
5. $\begin{array}[t]{rr}&1\\ +& 2 \\ \hline\\ \end{array}$
6. $\begin{array}[t]{rr}&6\\ +& 4 \\ \hline\\ \end{array}$
7. $\begin{array}[t]{rr}&5\\ +& 8 \\ \hline\\ \end{array}$
8. $\begin{array}[t]{rr}&2\\+& 5 \\ \hline\\ \end{array}$
9. $\begin{array}[t]{rr}&7\\ + &6\\ \hline\\ \end{array}$
10. $\begin{array}[t]{rr}&0\\ +&3\\ \hline\\ \end{array}$
11. $\begin{array}[t]{rr}&9\\ + &7 \\ \hline\\ \end{array}$
12. $\begin{array}[t]{rr}&7\\ +& 2 \\ \hline\\ \end{array}$

1. 13
2. 11
3. 6
4. 15
5. 3
6. 10
7. 13
8. 7
9. 13
10. 3
11. 16
12. 9
13. 8
14. 8

Use these steps to complete each addition question.

• Step 1: Add the ones to the ones.
• Step 2: Add the tens to the tens.
• Step 3: Add the hundreds to the hundreds.
• Step 4: Add the thousands to the thousands.
• Step 5: Add the ten thousands to the ten thousands.

Example A: 23 + 56 =

Step 1: Add the ones to the ones. 3 ones + 6 ones = 9 ones

$\begin{array}[t]{rr}&23\\+&56\\ \hline&9\end{array}$

Write the answer in line with the ones in the question.

Step 2: Add the tens. 2 tens + 5 tens = 7 tens

$\begin{array}[t]{rr}&23\\+ &56\\ \hline&79\end{array}$

The sum of 23 + 56 = 79

Exercise Two

Find the sums. Check your work using the answer key at the end of the exercise.

1. $\begin{array}[t]{rr}&37\\+&42\\ \hline\\ \end{array}$
2. $\begin{array}[t]{rr}&55\\+&22\\ \hline\\ \end{array}$
3. $\begin{array}[t]{rr}&70\\+&17\\ \hline\\ \end{array}$
4. $\begin{array}[t]{rr}&27\\+&32\\ \hline\\ \end{array}$
5. $\begin{array}[t]{rr}&87\\+&12\\ \hline\\ \end{array}$
6. $\begin{array}[t]{rr}&33\\+&64\\ \hline\\ \end{array}$
7. $\begin{array}[t]{rr}&44\\+&50\\ \hline\\ \end{array}$
8. $\begin{array}[t]{rr}&34\\+&11\\ \hline\\ \end{array}$
9. $\begin{array}[t]{rr}&51\\+&23\\ \hline\\ \end{array}$
10. $\begin{array}[t]{rr}&12\\+&46\\ \hline\\ \end{array}$
11. $\begin{array}[t]{rr}&17\\+&21\\ \hline\\ \end{array}$
12. $\begin{array}[t]{rr}&70\\+&28\\ \hline\\ \end{array}$
13. $\begin{array}[t]{rr}&54\\+&23\\ \hline\\ \end{array}$
14. $\begin{array}[t]{rr}&62\\+&14\\ \hline\\ \end{array}$
15. $\begin{array}[t]{rr}&15\\+&12\\ \hline\\ \end{array}$
16. $\begin{array}[t]{rr}&45\\+&23\\ \hline\\ \end{array}$
17. $\begin{array}[t]{rr}&23\\+&64\\ \hline\\ \end{array}$
18. $\begin{array}[t]{rr}&53\\+&42\\ \hline\\ \end{array}$
19. $\begin{array}[t]{rr}&60\\+&23\\ \hline\\ \end{array}$
20. $\begin{array}[t]{rr}&49\\+&10\\ \hline\\ \end{array}$
21. $\begin{array}[t]{rr}&75\\+&13\\ \hline\\ \end{array}$
22. $\begin{array}[t]{rr}&58\\+&21\\ \hline\\ \end{array}$
23. $\begin{array}[t]{rr}&31\\+&28\\ \hline\\ \end{array}$
24. $\begin{array}[t]{rr}&24\\+&13\\ \hline\\ \end{array}$

1. 79
2. 77
3. 87
4. 59
5. 99
6. 97
7. 94
8. 45
9. 74
10. 58
11. 38
12. 98
13. 77
14. 76
15. 27
16. 68
17. 87
18. 95
19. 83
20. 59
21. 88
22. 79
23. 59
24. 37

Exercise Three

Find the sums. Check your work using the answer key at the end of the exercise.

1. $\begin{array}[t]{rr}&32\\+&64\\ \hline\\ \end{array}$
2. $\begin{array}[t]{rr}&23\\+&54\\ \hline\\ \end{array}$
3. $\begin{array}[t]{rr}&61\\+&22\\ \hline\\ \end{array}$
4. $\begin{array}[t]{rr}&83\\+&11\\ \hline\\ \end{array}$
5. $\begin{array}[t]{rr}&32\\+&45\\ \hline\\ \end{array}$
6. $\begin{array}[t]{rr}&63\\+&33\\ \hline\\ \end{array}$
7. $\begin{array}[t]{rr}&75\\+&24\\ \hline\\ \end{array}$
8. $\begin{array}[t]{rr}&46\\+&12\\ \hline\\ \end{array}$
9. $\begin{array}[t]{rr}&44\\+&35\\ \hline\\ \end{array}$
10. $\begin{array}[t]{rr}&25\\+&42\\ \hline\\ \end{array}$
11. $\begin{array}[t]{rr}&41\\+&38\\ \hline\\ \end{array}$
12. $\begin{array}[t]{rr}&54\\+&45\\ \hline\\ \end{array}$
13. $\begin{array}[t]{rr}&25\\+&32\\ \hline\\ \end{array}$
14. $\begin{array}[t]{rr}&35\\+&42\\ \hline\\ \end{array}$
15. $\begin{array}[t]{rr}&32\\+&44\\ \hline\\ \end{array}$
16. $\begin{array}[t]{rr}&22\\+&14\\ \hline\\ \end{array}$
17. $\begin{array}[t]{rr}&57\\+&21\\ \hline\\ \end{array}$
18. $\begin{array}[t]{rr}&42\\+&54\\ \hline\\ \end{array}$
19. $\begin{array}[t]{rr}&34\\+&23\\ \hline\\ \end{array}$
20. $\begin{array}[t]{rr}&25\\+&42\\ \hline\\ \end{array}$
21. $\begin{array}[t]{rr}&13\\+&41\\ \hline\\ \end{array}$
22. $\begin{array}[t]{rr}&60\\+&25\\ \hline\\ \end{array}$
23. $\begin{array}[t]{rr}&34\\+&62\\ \hline\\ \end{array}$
24. $\begin{array}[t]{rr}&77\\+&21\\ \hline\\ \end{array}$

1. 96
2. 77
3. 83
4. 94
5. 77
6. 96
7. 99
8. 58
9. 79
10. 67
11. 79
12. 99
13. 57
14. 77
15. 76
16. 36
17. 78
18. 96
19. 57
20. 67
21. 54
22. 85
23. 96
24. 98

To add three or more numbers together, use the following steps.

• Step 1: Add the ones to the ones.
• Step 2: Add the tens to the tens.
• Step 3: Add the hundreds to the hundreds.
• Step 4: Add the thousands to the thousands.
• Step 5: Add the ten thousands to the ten thousands.

Example B: 24 + 52 + 73=

Step 1: Add the ones. 4 ones + 2 ones + 3 ones = 9 ones

$\begin{array}[t]{rr}&24\\&52\\+&73\\ \hline&9\end{array}$

Step 2: Add the tens. 2 tens + 5 tens + 7 ten = 14 tens

$\begin{array}[t]{rr}&24\\&52\\+&73\\ \hline&149\end{array}$

Exercise Three

1. $\begin{array}[t]{rr}&21\\&34\\+&44\\ \hline\\ \end{array}$
2. $\begin{array}[t]{rr}&11\\&61\\+&15\\ \hline\\ \end{array}$
3. $\begin{array}[t]{rr}&23\\&38\\+&41\\ \hline\\ \end{array}$
4. $\begin{array}[t]{rr}&20\\&43\\+&36\\ \hline\\ \end{array}$
5. $\begin{array}[t]{rr}&13\\&42\\+&34\\ \hline\\ \end{array}$
6. $\begin{array}[t]{rr}&33\\&64\\+&22\\ \hline\\ \end{array}$
7. $\begin{array}[t]{rr}&44\\&50\\+&24\\ \hline\\ \end{array}$
8. $\begin{array}[t]{rr}&37\\&42\\+&10\\ \hline\\ \end{array}$
9. $\begin{array}[t]{rr}&55\\&24\\+&30\\ \hline\\ \end{array}$
10. $\begin{array}[t]{rr}&82\\&17\\+&50\\ \hline\\ \end{array}$
11. $\begin{array}[t]{rr}&45\\&32\\+&52\\ \hline\\ \end{array}$
12. $\begin{array}[t]{rr}&70\\&21\\+&48\\ \hline\\ \end{array}$
13. $\begin{array}[t]{rr}&12\\&54\\+&62\\ \hline\\ \end{array}$
14. $\begin{array}[t]{rr}&25\\&61\\+&22\\ \hline\\ \end{array}$
15. $\begin{array}[t]{rr}&32\\&23\\+&94\\ \hline\\ \end{array}$
16. $\begin{array}[t]{rr}&33\\&55\\+&21\\ \hline\\ \end{array}$
17. $\begin{array}[t]{rr}&31\\&12\\+&85\\ \hline\\ \end{array}$
18. $\begin{array}[t]{rr}&41\\&31\\+&87\\ \hline\\ \end{array}$
19. $\begin{array}[t]{rr}&17\\&42\\+&50\\ \hline\\ \end{array}$
20. $\begin{array}[t]{rr}&56\\&31\\+&82\\ \hline\\ \end{array}$
21. $\begin{array}[t]{rr}&32\\&45\\+&51\\ \hline\\ \end{array}$
22. $\begin{array}[t]{rr}&24\\&65\\+&30\\ \hline\\ \end{array}$
23. $\begin{array}[t]{rr}&51\\&27\\+&41\\ \hline\\ \end{array}$
24. $\begin{array}[t]{rr}&22\\&14\\+&31\\ \hline\\ \end{array}$

1. 99
2. 87
3. 102
4. 99
5. 89
6. 119
7. 118
8. 89
9. 109
10. 149
11. 129
12. 139
13. 128
14. 108
15. 149
16. 109
17. 128
18. 159
19. 109
20. 169
21. 128
22. 119
23. 119
24. 67

Exercise Five

Find the sums. Check your work using the answer key at the end of the exercise.

1. $\begin{array}[t]{rr}&32\\&53\\+&14\\ \hline\\ \end{array}$
2. $\begin{array}[t]{rr}&42\\&25\\+&11\\ \hline\\ \end{array}$
3. $\begin{array}[t]{rr}&24\\&81\\+&13\\ \hline\\ \end{array}$
4. $\begin{array}[t]{rr}&52\\&24\\+&63\\ \hline\\ \end{array}$
5. $\begin{array}[t]{rr}&54\\&23\\+&71\\ \hline\\ \end{array}$
6. $\begin{array}[t]{rr}&25\\&60\\+&84\\ \hline\\ \end{array}$
7. $\begin{array}[t]{rr}&41\\&32\\+&96\\ \hline\\ \end{array}$
8. $\begin{array}[t]{rr}&31\\&43\\+&85\\ \hline\\ \end{array}$
9. $\begin{array}[t]{rr}&15\\&52\\+&82\\ \hline\\ \end{array}$
10. $\begin{array}[t]{rr}&43\\&21\\+&52\\ \hline\\ \end{array}$
11. $\begin{array}[t]{rr}&81\\&16\\+&42\\ \hline\\ \end{array}$
12. $\begin{array}[t]{rr}&56\\&31\\+&92\\ \hline\\ \end{array}$
13. $\begin{array}[t]{rr}&37\\&12\\+&80\\ \hline\\ \end{array}$
14. $\begin{array}[t]{rr}&63\\&25\\+&70\\ \hline\\ \end{array}$
15. $\begin{array}[t]{rr}&70\\&24\\+&65\\ \hline\\ \end{array}$
16. $\begin{array}[t]{rr}&25\\&41\\+&73\\ \hline\\ \end{array}$
17. $\begin{array}[t]{rr}&41\\&66\\+&32\\ \hline\\ \end{array}$
18. $\begin{array}[t]{rr}&24\\&33\\+&62\\ \hline\\ \end{array}$
19. $\begin{array}[t]{rr}&52\\&45\\+&21\\ \hline\\ \end{array}$
20. $\begin{array}[t]{rr}&71\\&16\\+&42\\ \hline\\ \end{array}$
21. $\begin{array}[t]{rr}&64\\&12\\+&90\\ \hline\\ \end{array}$
22. $\begin{array}[t]{rr}&55\\&21\\+&43\\ \hline\\ \end{array}$
23. $\begin{array}[t]{rr}&26\\&61\\+&82\\ \hline\\ \end{array}$
24. $\begin{array}[t]{rr}&44\\&53\\+&31\\ \hline\\ \end{array}$

1. 99
2. 78
3. 118
4. 139
5. 148
6. 169
7. 169
8. 159
9. 149
10. 116
11. 139
12. 179
13. 129
14. 158
15. 159
16. 139
17. 139
18. 119
19. 118
20. 129
21. 166
22. 119
23. 169
24. 128

Use these steps to complete each addition question.

• Step 1: Add the ones to the ones.
• Step 2: Add the tens to the tens.
• Step 3: Add the hundreds to the hundreds.

Example C: 372 + 415

Step 1: Add the ones. 2 ones + 5 ones = 7 ones

$\begin{array}[t]{rr}&372\\+&415\\ \hline& 7\end{array}$

Step 2: Add the tens. 7 tens + 1 ten = 8 tens

$\begin{array}[t]{rr}&372\\+&415\\ \hline&87 \end{array}$

Step 3: Add the hundreds. 3 hundreds + 4 hundreds = 7 hundreds

$\begin{array}[t]{rr}&372\\+&415\\ \hline&787 \end{array}$

Exercise Six

Find the sums. Check your work using the answer key at the end of the exercise.

1. $\begin{array}[t]{rr}&324\\+&865\\ \hline\\ \end{array}$
2. $\begin{array}[t]{rr}&514\\+&274\\ \hline\\ \end{array}$
3. $\begin{array}[t]{rr}&673\\+&326\\ \hline\\ \end{array}$
4. $\begin{array}[t]{rr}&603\\+&375\\ \hline\\ \end{array}$
5. $\begin{array}[t]{rr}&174\\+&922\\ \hline\\ \end{array}$
6. $\begin{array}[t]{rr}&250\\+&618\\ \hline\\ \end{array}$
7. $\begin{array}[t]{rr}&506\\+&182\\ \hline\\ \end{array}$
8. $\begin{array}[t]{rr}&514\\+&482\\ \hline\\ \end{array}$
9. $\begin{array}[t]{rr}&738\\+&510\\ \hline\\ \end{array}$
10. $\begin{array}[t]{rr}&321\\+&358\\ \hline\\ \end{array}$
11. $\begin{array}[t]{rr}&215\\+&584\\ \hline\\ \end{array}$
12. $\begin{array}[t]{rr}&416\\+&352\\ \hline\\ \end{array}$
13. $\begin{array}[t]{rr}&167\\+&522\\ \hline\\ \end{array}$
14. $\begin{array}[t]{rr}&315\\+&573\\ \hline\\ \end{array}$
15. $\begin{array}[t]{rr}&156\\+&732\\ \hline\\ \end{array}$
16. $\begin{array}[t]{rr}&713\\+&256\\ \hline\\ \end{array}$
17. $\begin{array}[t]{rr}&135\\+&564\\ \hline\\ \end{array}$
18. $\begin{array}[t]{rr}&105\\+&632\\ \hline\\ \end{array}$
19. $\begin{array}[t]{rr}&253\\+&644\\ \hline\\ \end{array}$
20. $\begin{array}[t]{rr}&535\\+&442\\ \hline\\ \end{array}$
21. $\begin{array}[t]{rr}&168\\+&421\\ \hline\\ \end{array}$
22. $\begin{array}[t]{rr}&834\\+&162\\ \hline\\ \end{array}$
23. $\begin{array}[t]{rr}&422\\+&361\\ \hline\\ \end{array}$
24. $\begin{array}[t]{rr}&327\\+&462\\ \hline\\ \end{array}$

1. 1189
2. 788
3. 999
4. 978
5. 1096
6. 868
7. 688
8. 996
9. 1248
10. 679
11. 799
12. 768
13. 689
14. 888
15. 888
16. 969
17. 699
18. 737
19. 897
20. 977
21. 589
22. 996
23. 783
24. 789

Exercise Seven

Find the sums. Check your work using the answer key at the end of the exercise.

1. $\begin{array}[t]{rr}&754\\+&231\\ \hline\\ \end{array}$
2. $\begin{array}[t]{rr}&410\\+&257\\ \hline\\ \end{array}$
3. $\begin{array}[t]{rr}&653\\+&142\\ \hline\\ \end{array}$
4. $\begin{array}[t]{rr}&815\\+&170\\ \hline\\ \end{array}$
5. $\begin{array}[t]{rr}&243\\+&146\\ \hline\\ \end{array}$
6. $\begin{array}[t]{rr}&615\\+&303\\ \hline\\ \end{array}$
7. $\begin{array}[t]{rr}&124\\+&762\\ \hline\\ \end{array}$
8. $\begin{array}[t]{rr}&451\\+&206\\ \hline\\ \end{array}$
9. $\begin{array}[t]{rr}&705\\+&261\\ \hline\\ \end{array}$
10. $\begin{array}[t]{rr}&627\\+&512\\ \hline\\ \end{array}$
11. $\begin{array}[t]{rr}&357\\+&130\\ \hline\\ \end{array}$
12. $\begin{array}[t]{rr}&725\\+&273\\ \hline\\ \end{array}$
13. $\begin{array}[t]{rr}&753\\+&902\\ \hline\\ \end{array}$
14. $\begin{array}[t]{rr}&425\\+&203\\ \hline\\ \end{array}$
15. $\begin{array}[t]{rr}&652\\+&137\\ \hline\\ \end{array}$
16. $\begin{array}[t]{rr}&357\\+&132\\ \hline\\ \end{array}$
17. $\begin{array}[t]{rr}&675\\+&214\\ \hline\\ \end{array}$
18. $\begin{array}[t]{rr}&802\\+&254\\ \hline\\ \end{array}$
19. $\begin{array}[t]{rr}&524\\+&321\\ \hline\\ \end{array}$
20. $\begin{array}[t]{rr}&723\\+&306\\ \hline\\ \end{array}$
21. $\begin{array}[t]{rr}&243\\+&152\\ \hline\\ \end{array}$
22. $\begin{array}[t]{rr}&145\\+&213\\ \hline\\ \end{array}$
23. $\begin{array}[t]{rr}&262\\+&321\\ \hline\\ \end{array}$
24. $\begin{array}[t]{rr}&525\\+&131\\ \hline\\ \end{array}$

1. 985
2. 667
3. 795
4. 985
5. 389
6. 918
7. 886
8. 657
9. 966
10. 1139
11. 487
12. 998
13. 1 655
14. 628
15. 789
16. 489
17. 889
18. 1056
19. 845
20. 1029
21. 395
22. 358
23. 583
24. 676

To add three or more numbers together, use the following steps.

• Step 1: Add the ones to the ones.
• Step 2: Add the tens to the tens.
• Step 3: Add the hundreds to the hundreds.

Example D: 372 + 415 + 210

Step 1: Add the ones. 2 ones + 5 ones + 0 ones = 7 ones

$\begin{array}[t]{rr}&372\\&415\\+&210\\ \hline&7 \end{array}$

Step 2: Add the tens. 7 tens + 1 ten + 1 ten = 9 tens

$\begin{array}[t]{rr}&372\\&415\\+&210\\ \hline&97 \end{array}$

Step 3: Add the hundreds. 3 hundreds + 4 hundreds + 2 hundreds = 9 hundreds

$\begin{array}[t]{rr}&372\\&415\\+&210\\ \hline&997 \end{array}$

Exercise Eight

1. $\begin{array}[t]{rr}&345\\&132\\+&421\\ \hline\\ \end{array}$
2. $\begin{array}[t]{rr}&524\\&630\\+&721\\ \hline\\ \end{array}$
3. $\begin{array}[t]{rr}&305\\&131\\+&422\\ \hline\\ \end{array}$
4. $\begin{array}[t]{rr}&214\\&341\\+&932\\ \hline\\ \end{array}$
5. $\begin{array}[t]{rr}&821\\&324\\+&423\\ \hline\\ \end{array}$
6. $\begin{array}[t]{rr}&353\\&301\\+&624\\ \hline\\ \end{array}$
7. $\begin{array}[t]{rr}&435\\&201\\+&160\\ \hline\\ \end{array}$
8. $\begin{array}[t]{rr}&641\\&322\\+&833\\ \hline\\ \end{array}$
9. $\begin{array}[t]{rr}&132\\&254\\+&413\\ \hline\\ \end{array}$
10. $\begin{array}[t]{rr}&713\\&102\\+&860\\ \hline\\ \end{array}$
11. $\begin{array}[t]{rr}&245\\&321\\+&803\\ \hline\\ \end{array}$
12. $\begin{array}[t]{rr}&341\\&215\\+&840\\ \hline\\ \end{array}$
13. $\begin{array}[t]{rr}&524\\&243\\+&125\\ \hline\\ \end{array}$
14. $\begin{array}[t]{rr}&253\\&114\\+&321\\ \hline\\ \end{array}$
15. $\begin{array}[t]{rr}&272\\&315\\+&410\\ \hline\\ \end{array}$
16. $\begin{array}[t]{rr}&514\\&231\\+&620\\ \hline\\ \end{array}$
17. $\begin{array}[t]{rr}&246\\&351\\+&502\\ \hline\\ \end{array}$
18. $\begin{array}[t]{rr}&152\\&331\\+&216\\ \hline\\ \end{array}$
19. $\begin{array}[t]{rr}&164\\&233\\+&801\\ \hline\\ \end{array}$
20. $\begin{array}[t]{rr}&414\\&231\\+&552\\ \hline\\ \end{array}$
21. $\begin{array}[t]{rr}&362\\&627\\+&510\\ \hline\\ \end{array}$
22. $\begin{array}[t]{rr}&264\\&535\\+&600\\ \hline\\ \end{array}$
23. $\begin{array}[t]{rr}&432\\&653\\+&313\\ \hline\\ \end{array}$
24. $\begin{array}[t]{rr}&631\\&216\\+&552\\ \hline\\ \end{array}$

1. 898
2. 1875
3. 858
4. 1487
5. 1568
6. 1278
7. 796
8. 1796
9. 799
10. 1675
11. 1369
12. 1396
13. 892
14. 688
15. 997
16. 1365
17. 1099
18. 699
19. 1198
20. 1197
21. 1499
22. 1399
23. 1398
24. 1399

Did you Know?

Some people like to check their addition by adding a second time, starting with the bottom number instead of the top number. For example.

$\begin{array}[t]{rr}&63\\&+35\\ \hline&98 \end{array}$

Add: $\begin{array}[t]{r}3+5=8\\ 6+3=9\end{array}$

Check: $\begin{array}[t]{r}5+3=8\\ 3+6=9\end{array}$

Exercise Nine

Find the sums. Check your addition a second time by starting at the bottom. Place a check mark (√) beside your answer after you have added from the bottom to the top. Check your work using the answer key at the end of the exercise.

1. $\begin{array}[t]{rr}&7\,003 \\+& 2\,692\\ \hline\\ \end{array}$
2. $\begin{array}[t]{rr}&6\,217\\+& 3\,732\\ \hline\\ \end{array}$
3. $\begin{array}[t]{rr}&2\,271 \\+& 3\,618\\ \hline\\ \end{array}$
4. $\begin{array}[t]{rr}&5\,992 \\+& 3\,006\\ \hline\\ \end{array}$
5. $\begin{array}[t]{rr}&4\,235 \\+& 1\,162\\ \hline\\ \end{array}$
6. $\begin{array}[t]{rr}&6\,518\\+& 2\,050\\ \hline\\ \end{array}$
7. $\begin{array}[t]{rr}&1\,023\\+& 1\,553\\ \hline\\ \end{array}$
8. $\begin{array}[t]{rr}&4\,034 \\+& 2\,853\\ \hline\\ \end{array}$
9. $\begin{array}[t]{rr}&5\,234\\+& 1\,244\\ \hline\\ \end{array}$
10. $\begin{array}[t]{rr}&41\,738\\+& 38\,051\\ \hline\\ \end{array}$
11. $\begin{array}[t]{rr}&20\,295\\+& 46\,503\\ \hline\\ \end{array}$
12. $\begin{array}[t]{rr}&62\,041 \\+& 12\,857\\ \hline\\ \end{array}$
13. $\begin{array}[t]{rr}&73\,104 \\+& 21\,620\\ \hline\\ \end{array}$
14. $\begin{array}[t]{rr}&40\,835 \\+& 25\,034\\ \hline\\ \end{array}$

1. 9695
2. 9949
3. 5889
4. 8998
5. 5397
6. 8568
7. 2576
8. 6887
9. 6478
10. 79789
11. 66798
12. 74898
13. 94724
14. 65869

If an addition question is written with the numbers side by side, rewrite the question in columns. Put the ones under the ones, the tens under the tens, the hundreds under the hundreds, and so on.

Example E: 263 + 25

$\begin{array}[t]{rr}&263\\+&25\\ \hline &288\end{array}$

Example F: 316 + 9 560

$\begin{array}[t]{rr}&316\\+&9560\\ \hline &9876\end{array}$

Exercise Ten

Rewrite each question in columns and find the total. Check your work using the answer key at the end of the exercise.

1. $\begin{array}[t]{rr}&75 \\+& 512 \\ \hline\\ \end{array}$
2. $\begin{array}[t]{rr}&372 \\+& 16 \\ \hline\\ \end{array}$
3. $\begin{array}[t]{rr}&691 \\+& 8 \\ \hline\\ \end{array}$
4. $\begin{array}[t]{rr}&4 \\+& 275 \\ \hline\\ \end{array}$
5. $\begin{array}[t]{rr}&3\,457 \\+& 112 \\ \hline\\ \end{array}$
6. $\begin{array}[t]{rr}&2\,403 \\+& 340 \\ \hline\\ \end{array}$
7. $\begin{array}[t]{rr}&730 \\&422 \\+& 36 \\ \hline\\ \end{array}$
8. $\begin{array}[t]{rr}&24 \\&333 \\+& 442 \\ \hline\\ \end{array}$
9. $\begin{array}[t]{rr}&3\,000 \\&24\,132 \\+& 70\,534 \\ \hline\\ \end{array}$
10. $\begin{array}[t]{rr}&34\,511 \\&3\,012 \\+& 40\,234 \\ \hline\\ \end{array}$

1. 587
2. 388
3. 699
4. 279
5. 3569
6. 2743
7. 1188
8. 799
9. 97666
10. 77757

# Topic A: Self-Test

Mark /22 Aim 17/22

1. Find the sums. Be sure to check your answers. (6 marks)
1. $\begin{array}[t]{rr}&63\\+&25\\ \hline\\ \end{array}$
2. $\begin{array}[t]{rr}&15\\+&72\\ \hline\\ \end{array}$
3. $\begin{array}[t]{rr}&43\\+&54\\ \hline\\ \end{array}$
4. $\begin{array}[t]{rr}&42\\&33\\+&14\\ \hline\\ \end{array}$
5. $\begin{array}[t]{rr}&34\\&22\\+&52\\ \hline\\ \end{array}$
6. $\begin{array}[t]{rr}&21\\&46\\+&72\\ \hline\\ \end{array}$
2. Find the sums. Be sure to check your answers. (6 marks)
1. $\begin{array}[t]{rr}&421\\+&354\\ \hline\\ \end{array}$
2. $\begin{array}[t]{rr}&832\\+&162\\ \hline\\ \end{array}$
3. $\begin{array}[t]{rr}&956\\+&730\\ \hline\\ \end{array}$
4. $\begin{array}[t]{rr}&375\\&213\\+&611\\ \hline\\ \end{array}$
5. $\begin{array}[t]{rr}&211\\&351\\+&515\\ \hline\\ \end{array}$
6. $\begin{array}[t]{rr}&731\\&245\\+&312\\ \hline\\ \end{array}$
3. Find the sums. Be sure to check your answers. (6 marks)
1. $\begin{array}[t]{rr}&4\,235\\+& 4\,730\\ \hline\\ \end{array}$
2. $\begin{array}[t]{rr}&6\,513\\+& 4\,182\\ \hline\\ \end{array}$
3. $\begin{array}[t]{rr}&8\,250\\+& 3\,647\\ \hline\\ \end{array}$
4. $\begin{array}[t]{rr}&51\,672\\+& 36\,124\\ \hline\\ \end{array}$
5. $\begin{array}[t]{rr}&25\,186\\+& 43\,50\\ \hline\\ \end{array}$
6. $\begin{array}[t]{rr}&42\,196\\+& 70\,301\\ \hline\\ \end{array}$
4. Add these numbers. (4 marks)
1. $\begin{array}[t]{rr}&45 \\ &21\\+& 32 \\ \hline\\ \end{array}$
2. $\begin{array}[t]{rr}&242 \\&325\\+& 112 \\ \hline\\ \end{array}$
3. $\begin{array}[t]{rr}&8\,013 \\& 1\,246 \\+& 5\,430 \\ \hline\\ \end{array}$
4. $\begin{array}[t]{rr}&5\,214 \\ &40\,230 \\+& 2\,345\\ \hline\\ \end{array}$

1. 88
2. 87
3. 97
4. 89
5. 108
6. 139
1. 775
2. 994
3. 1686
4. 1199
5. 1077
6. 1288
1. 8965
2. 10695
3. 11897
4. 87796
5. 68689
6. 112497
1. 98
2. 679
3. 14689
4. 47789