Unit 2: Addition
Topic C: Addition of Larger Numbers
Use these steps to complete each addition question.
- Add the ones to the ones.
- Add the tens to the tens.
- Add the hundreds to the hundreds.
Example A:
[latex]\begin{align} 23\\ +56\\ \hline \\ \end{align}[/latex]
- Add the ones to the ones. 3 ones + 6 ones = 9 ones. Write the answer in line with the ones in the equation.
[latex]\begin{align} 23\\ +56\\ \hline 9 \end{align}[/latex] - Add the tens. 2 tens + 5 tens = 7 tens
[latex]\begin{align} 23\\ +56\\ \hline 79\end{align}[/latex]
The sum of 23 + 56 = 79
Example B:
[latex]\begin{align} 372\\ +415\\ \hline \\ \end{align}[/latex]
- Add the ones. 2 ones + 5 ones = 7 ones
[latex]\begin{align} 372\\ +415\\ \hline 7\end{align}[/latex] - Add the tens. 7 tens + 1 ten = 8 tens
[latex]\begin{align} 372\\ +415\\ \hline 87\end{align}[/latex] - Add the hundreds. 3 hundreds + 4 hundreds = 7 hundreds
[latex]\begin{align} 372\\ +415\\ \hline 787\end{align}[/latex]
The sum of 372 + 415 = 787
Exercise 1
Find the sums. Check your work using the answer key at the end of the exercise.
- [latex]\begin{align} 23\\ +56\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 20\\ +69\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 58\\ +21\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 62\\ +13\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 73\\ +14\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 44\\ +54\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 10\\ +75\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 36\\ +22\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 10\\ +36\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 16\\ +23\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 40\\ +50\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 37\\ +32\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 14\\ +50\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 23\\ +16\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 41\\ +38\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 40\\ +11\\ \hline \\ \end{align}[/latex]
Answers to Exercise 1
- 79
- 89
- 79
- 75
- 87
- 98
- 85
- 58
- 46
- 39
- 90
- 69
- 64
- 39
- 79
- 51
Exercise 2
Find the sums. Check your work using the answer key at the end of the exercise.
- [latex]\begin{align} 47\\ +51\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 65\\ +24\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 78\\ +21\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 84\\ +12\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 73\\ +22\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 64\\ +13\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 25\\ +64\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 51\\ +38\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 26\\ +43\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 40\\ +57\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 76\\ +23\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 86\\ +13\\ \hline \\ \end{align}[/latex]
Answers to Exercise 2
- 98
- 89
- 99
- 96
- 95
- 77
- 89
- 89
- 69
- 97
- 99
- 99
Exercise 3
Find the sums. Check your work using the answer key at the end of the exercise.
- [latex]\begin{align} 32\\ +64\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 23\\ +54\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 62\\ +22\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 83\\ +11\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 32\\ +45\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 63\\ +33\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 75\\ +24\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 46\\ +12\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 44\\ +35\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 25\\ +42\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 41\\ +38\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 54\\ +45\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 25\\ +32\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 35\\ +42\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 32\\ +44\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 22\\ +14\\ \hline \\ \end{align}[/latex]
Answers to Exercise 3
- 96
- 77
- 84
- 94
- 77
- 96
- 99
- 58
- 79
- 67
- 79
- 99
- 57
- 77
- 76
- 36
Exercise 4
Find the sums. Check your work using the answer key at the end of the exercise.
- [latex]\begin{align} 286\\ +513\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 649\\ +250\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 156\\ +542\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 503\\ +361\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 273\\ +620\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 27\\ +961\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 852\\ +36\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 300\\ +50\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 364\\ +523\\ \hline \\ \end{align}[/latex]
Answers to Exercise 4
- 799
- 899
- 698
- 864
- 893
- 988
- 888
- 350
- 887
Exercise 5
Find the sums. Check your work using the answer key at the end of the exercise.
- [latex]\begin{align} 171\\ +401\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 314\\ +553\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 431\\ +317\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 213\\ +384\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 163\\ +224\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 412\\ +513\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 731\\ +142\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 314\\ +524\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 253\\ +401\\ \hline \\ \end{align}[/latex]
Answers to Exercise 5
- 572
- 867
- 748
- 597
- 387
- 925
- 873
- 838
- 654
Topic C Self-Test
- Find the sums. Be sure to check your answers. (12 marks)
- [latex]\begin{align} 46\\ +23\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 32\\ +13\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 72\\ +25\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 56\\ +12\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 65\\ +34\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 25\\ +51\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 324\\ +263\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 183\\ +514\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 753\\ +145\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 618\\ +120\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 224\\ +465\\ \hline \\ \end{align}[/latex]
- [latex]\begin{align} 563\\ +216\\ \hline \\ \end{align}[/latex]
- Solve each of the following word problems. Be sure to include the unit of measure in your answer. Be sure to circle the information and underline what’s being asked.(6 marks, 2 marks each)
- Mahala’s dad worked 45 hours one week and 52 hours the next week. How many hours did he work during those two weeks?
- A trucker drove 526 kilometers on the first trip and 341 kilometers on the next. How many kilometers did the trucker drive altogether?
- Find the perimeter of the garden.
Answers to Topic C Self-Test
-
- 69
- 45
- 97
- 68
- 99
- 76
- 587
- 697
- 898
- 738
- 689
- 779
-
- 97 hours
- 867 kilometres
- 46 metres
Emotions Check
How are you feeling?
- Are your palms moist?
- How is your breathing?
Take control. Be the boss. If you are feeling anxious, practice your breathing exercise.
Remember: Breathe in slowly to the count of four, hold it for the count of four.