With the "Distributive Property of
Multiplication", a sum is multiplied
by a number. For example:
4 X (9 + 5)
a.) You can multiply each addend by the number
and then add the products.
(4 X 9) + (4 X 5) = 36 + 20 = 56 or
b.) Add then multiply. 4 X (9 + 5) = 4 X (14) = 56
Complete the following:
(5 X 7) + (5 X 3) = 35 +
( X 4 ) + (3 X 4) = 20 + 12
(10 X 4) + ( X 5) =
+ 45
( X 2) + (8 X 9) = 18 +
(9 X 3) + ( X 7) =
+ 21
( X 2) + (7 X 7) = 18 + 49
(9 X ) + (9 X 3) = 72 + 27
( X 8) + (4 X 6) = 40 +
(6 X 20) + (6 X ) = 120 + 54
3 X (8 + 21) = (3 X 8) + (3 X )
6 X (8 + 5) = ( X 8) + (6 X 5)
X (2 + 4) = (15 X 2) + (15 X 4)
X (4 + 6) = (12 X 4) + (12 X 6)
3 X (19 + 12) = (3 X ) + (3 X 12)
5 X (30 + 4) = ( 5 X ) + (5 X 4)
10 X (16 + 5) = ( X 16) + (10 X 5)
17 X (7 + 3) = (17 X ) + (17 X
)
12 X (7 + 8) = ( X 7) + (12 X 8)
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