Distributive Property
5 x 40 = ___ x ( ___ + ___ )
5 x 40 = 4 x ( 20 + 20 )
4 x (3 x 5) = (___ x ___) x ___
4 x (3 x 5) = (4 x 3) x 5
Write 50 as a multiple of 10
50 = ___ x 10 = ___ tens
50 = 5 x 10 = 5 tens
3 x 20 = ___
3 x 20 = 60
_______ of 10 have a 0 in the ones place.
Multiples
8 x 20 = ( 8 x ___ ) + ( 8 x ___)
8 x 20 = ( 8 x 10 ) + ( 8 x 10)
Which of these is one way to find 7 X 80
A. 7 × (10 + 8)
B. (7 × 8) × 10
C. 7 + (8 × 1)
D. (7 × 8) + 0
B. (7 × 8) × 10
4 x 40 = ___ x ___ tens
= ___ tens = ___
4 x 40 = 4 x 4 tens
= 16 tens = 160
3 x 40 = ___
3 x 40 = 120
The _________ Property states that multiplying a sum by a number is the same as multiplying each addend by the number and then adding the products.
Distributive
Use the distributive property to solve
6 x 20 = 6 x (___ x ___)
6 x 20 = (___x___) + (___x___)
6 x 20 = ___ + ___
6 x 20 = ____
6 x 20 = 6 x (10 x 10)
6 x 20 = (6 x 10) + (6 x 10)
6 x 20 = 60 + 60
6 x 20 = 120
6 x ___ = 6 x 7 x 10
6 x 70 = 6 x 7 x 10
How many tens are in the product of 40 x 9?
A. 14 tens
B. 45 tens
C. 36 tens
D. 360 tens
C. 36 tens
7 x 30 = ___
7 x 30 = 210
The ________ Property of Multiplication states that when the grouping of the factors is changed, the product remains the same.
Associative
Trish places tiles on one wall of a swimming pool. There are 7 rows of tiles with 30 tiles in each row. How many tiles does Trish place on the wall?
7 x 30 = 7 x ( ___ + ___ + ___ )
7 x 30 = ( 7 x ___) + ( 7 x ___) + ( 7 x ___)
7 x 30 = ___ + ___ + ___
7 x 30 + = ___
7 x 30 = 7 x ( 10 + 10 + 10 )
7 x 30 = ( 7 x 10) + ( 7 x 10) + ( 7 x 10)
7 x 30 = 70 + 70 + 70
7 x 30 + = 210
30 x 5 = ( 3 x 10 ) x 5
30 x 5 = ___ x ( ___ x ___ )
30 x 5 = ( 3 x 10 ) x 5
30 x 5 = 3 x ( 10 x 5 )
How many tens are in 50 x 7?
A. 30 tens
B. 350 tens
C. 12 tens
D. 35 tens
D. 35 tens
50 x 5 = ___
50 x 5 = 250
The ____ Property of Multiplication states that the product of zero and any number is zero.
Zero
Philippe paves a walkway with stones. He uses 4 rows of stones with 40 stones in each row. How many stones does Philippe use?
4 x 40 = 4 x (___ + ___ + ___ + ___ )
4 x 40 = ( 4 x ___ ) + ( 4 x ___ ) + ( 4 x ___) + ( 4 x ___ )
4 x 40 = ___ + ___ + ___ + ___
4 x 40 = ___
4 x 40 = 4 x (10 + 10 + 10 + 10 )
4 x 40 = ( 4 x 10 ) + ( 4 x 10 ) + ( 4 x 10 ) + ( 4 x 10 )
4 x 40 = 40 + 40 + 40 + 40
4 x 40 = 160
40 x 6 = ( ___ x ___ ) x 6
40 x 6 = ___ x ( ___ x ___ )
40 x 6 = ( 4 x 10 ) x 6
40 x 6 = 4 x ( 10 x 6 )
7 x 80 = 7 x ___ tens
= ___ tens
= ____
7 x 80 = 7 x 8 tens
= 56 tens
= 560
80 x 4 = ___
80 x 4 = 320
The ______ Property of Multiplication states that the product of any number and 1 is that number.
Identity