Page 80 - Arithmetic

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DO NOT DUPLICATE

Adding numbers vertically by regrouping

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Example

7 7
+ 1 9

Solution

Steps

1. Add the group of ones, 7 + 9 = 16. 1

Write 6 in the ones place, + 7 7
1 9
carry 1 to the tens place. 6

1
2. Add the group of tens, 1 +7+1=9. 7 7

Write 9 in the tens place. + 1 9
9 6

The answer is 96.

Exercise 7

Add the following numbers vertically.

1. 7 4 3. 2 5 5. 4 9

+
+
+
1 8 6 7 3 8

2. 4. 4 5
6.
6 7
3 4
+
+
+
4 8 1 4 1 8

73
PROPERTY OF UNITED REPUBLIC OF TANZANIA GOVERNMENT
Ministry of Education, Science and Technology
Mathematics STD 1.indd 73 03/08/2019 11:17