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Example 2: Add 35 and 12.

Solution:
Step 1. Add the ones first. Step 2. Add the tens next.

tens Ones tens Ones

3 5 3 5

+ 2 + + 1 2 +

7 4 7

Thus, 35 + 12 = 47 www

Example 3: Find: 64 + 25. MAths connect

Solution: A standard size football is made
up of Pentagons and Hexagons. There
tens Ones tens Ones are 12 pentagons and 20 hexagons. How

6 4 6 4 many pieces are used altogether?

+ 2 5 + 2 5 Hexagon

9 8 9 Pentagon

Thus, 64 + 25 = 89

Practice time 7C

Add the following.

1. tens Ones 2. tens Ones 3. tens Ones 4. tens Ones

2 5 5 6 3 3 7 7

+ 2 4 + 4 1 + 2 5 + 2 1

5. tens Ones 6. tens Ones 7. tens Ones 8. tens Ones

6 7 4 6 2 5 2 1

+ 2 0 + 2 2 + 6 0 + 7 0

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