Page 78 - Arithmetic

FOR ONLINE USE ONLY
DO NOT DUPLICATE

Adding numbers horizontally by regrouping

FOR ONLINE USE ONLY
Example
46 + 38 =

Solution 46 + 38 = 84

1. Add the ones to get 14. Write 4 in the ones place.

1
2. Carry 1 to the tens, 46 + 38 = 4
6 + 8
1
3. Add the group of tens to get 8, 46 + 38 = 8 4
1 + 4 + 3
Write 8 in the tens place. The answer is 84.

Exercise 5

Add these numbers horizontally.

1. 46 + 9 = 11. 73 + 7 =

2. 35 + 5 = 12. 35 + 49 =

3. 74 + 8 = 13. 38 + 42 =

4. 26 + 44 = 14. 23 + 39 =

5. 63 + 28 = 15. 66 + 28 =

6. 79 + 19 = 16. 44 + 27 =

7. 38 + 48 = 17. 38 + 43 =

8. 56 + 37 = 18. 45 + 49 =

9. 43 + 49 = 19. 59 + 19 =

10. 17 + 9 = 20. 78 + 13 =

71
PROPERTY OF UNITED REPUBLIC OF TANZANIA GOVERNMENT
Ministry of Education, Science and Technology
Mathematics STD 1.indd 71 03/08/2019 11:17