Page 70 - TB_6B
P. 70
2 . Use the Commutative and Associative Properties of Addition to find
the sum.
The Commutative and Associative Properties of Addition can be used
when adding rational numbers.
0.4 1.2 0.4 Commutative Property
= 1.2 0.4 0.4 Associative Property
= 1.2 0.4 0.4
= 1.2 0
= 1.2
a. 0.6 1.5 0.6 = 1.5 b. 1 2 1 = 2
4 5 4 5
c. 1.7 0.8 1.7 d. 3 1 3 3
7 5 7
e. 3.4 1.5 2.4 2.5 f. 3 2 2 1
5 5 5
22. Rational Numbers 59
the sum.
The Commutative and Associative Properties of Addition can be used
when adding rational numbers.
0.4 1.2 0.4 Commutative Property
= 1.2 0.4 0.4 Associative Property
= 1.2 0.4 0.4
= 1.2 0
= 1.2
a. 0.6 1.5 0.6 = 1.5 b. 1 2 1 = 2
4 5 4 5
c. 1.7 0.8 1.7 d. 3 1 3 3
7 5 7
e. 3.4 1.5 2.4 2.5 f. 3 2 2 1
5 5 5
22. Rational Numbers 59
