Page 24 - Math Course 1 (Book 1)

Adding Integers

Add Integers on a Number Line

Find 3 + (–6) Find –5 + 8
A. 3 C. 9 A. 13 C. 3
B. -3 C. -9 B. -13 C. -3

Answer Answer

MO. 1 - L3c

Adding More Than Two
Integers

Adding Three or More Integers

Examples

Find –8 + (–4) + 8.

–8 + (–4) + 8 = 8 + 8 + (–4) Commutative Property

= 0 + (–4) Additive Inverse Property Answer -4

= –4 Identity Property of Addition

Find 6 + (–3) + (–9) + 2

6 + (–3) + (–9) + 2 = 6 + 2 + (–3) + (–9) Commutative Property

= [6 + 2] + [–3 + (–9)] Associative Property Answer -4

= 8 + (–12) or –4 Simplify

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