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056_G3U12_G4U19_˙—» ¿º 2011.3.22 9:5 PM ˘ ` 113 PDF_In 2540DPI 150LPI T
2 . Multiply 3 numbers.
Associative Property of Multiplication
The grouping of factors does not change the product.
(3 4) 2 = 24 3 (4 2) = 24
12 2 = 24 3 8 = 24
a. 4 5 7 = b. 2 8 5 =
c. 3 4 5 = d. 12 5 8 =
e. 8 3 5 = f. 6 7 5 =
3 . Find the missing number. b. 8 (3 ) = 48
a. (5 2) 4 = 40
10
c. (2 ) 6 = 36 d. ( 4) 7 = 56
12. Beat the Calculator! 113
2 . Multiply 3 numbers.
Associative Property of Multiplication
The grouping of factors does not change the product.
(3 4) 2 = 24 3 (4 2) = 24
12 2 = 24 3 8 = 24
a. 4 5 7 = b. 2 8 5 =
c. 3 4 5 = d. 12 5 8 =
e. 8 3 5 = f. 6 7 5 =
3 . Find the missing number. b. 8 (3 ) = 48
a. (5 2) 4 = 40
10
c. (2 ) 6 = 36 d. ( 4) 7 = 56
12. Beat the Calculator! 113
