Zero and Identity
7 x 0
0
Find the missing number:
4 x 3 = ____ x 4
3
Complete the equation.
(6 × 5) × 10 = 6 × ( ______ × ______ )
6 x (5 x 10)
(3 × 1) + (3 × 5) = 3 × _____
6
2 x 40 =
80
12
5 x 1
5
Find the missing number:
2 x 5 = ____ x 2
5
Complete the equation.
(9 × 1) × 3 = 9 × ( ______ × ______ )
9 x (1 x 3)
(9 × 2) + (9 × 5) = 9 × _____
7
40 x 6
240
5 x 4 =
20
8 x 0
0
Rewrite the problem using the COMMUTATIVE property of Multiplication:
4 x 5
5 x 4
Complete the equation.
(8 × 7) × 2 = 8 × ( ______ × ______ )
8 x (7 x 2)
(5 × 2) + (5 × 4) = 5 × _____
6
5 x 60 =
300
10 x 3 =
30
9 x 1
9
Rewrite the problem using the COMMUTATIVE property of Multiplication:
3 x 8
8 x 3
Use the ASSOCIATIVE property of multiplication to rewrite the problem:
4 x (5 x 6)
(4 x 5) X 6
(9 × 5) + (9 × 3) = _____ × 8
How many tens are in the product of 40 × 7?
28 tens
9 x 7 =
63
52 x 1
52
Rewrite the problem using the COMMUTATIVE property of Multiplication:
12 x 6
6 x 12
Use the ASSOCIATIVE property of multiplication to rewrite the problem:
6 x (6 x 3)
(6 x 6) x 3
Rewrite the problem using the DISTRIBUTIVE property of multiplication.
4 × 9
EXAMPLE:
(4 x 5) + (4 x 4)
How many tens are in the product of 3 × 80?
24 tens
6 x 8 =
48