Page 39 - ICSE Math 1

Addition Fact

When we add two numbers in any order, the answer does not change.

+ =

3 + 4 = 7

+ =

4 + 3 = 7

6. Add the numbers.

(a) 3 + 4 = = 4 + 3 (b) 2 + 6 = 6 + 2 =

(c) 7 + 2 = 2 + 7 = (d) 0 + 6 = = 6 + 0

(e) 8 + 1 = = 1 + 8 (f) 5 + 3 = = 3 + 5

Brainwork

Fill in the blanks.

(a) 5 + = 6 = 1 + 5 (b) + 3 = 5 = 3 + 2

(c) 0 + = 9 = 9 + 0 (d) 4 + = 8 = + 4

Number Fact

We can add diff erent combina ons of two numbers to get the same answer.
For example, 1 + 7 = 8 and 2 + 6 = 8.

This is called number fact. Look at the number fact for 8.
8 + 0 = 8

7 + 1 = 8

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