Question

fill in the blanks. then, choose the property of multiplication you used.
(a) (square\times1 = 5)
select (\boldsymbol{downarrow})
(b) (0\times9=square)
select (\boldsymbol{downarrow})
(c) (square\times9 = 9\times7)
select (\boldsymbol{downarrow})
(d) (2\times(5\times9)=(2\times5)\timessquare)
select (\boldsymbol{downarrow})

Explanation:

Part (a)

Step1: Recall multiplication identity property

The multiplication identity property states that \( a \times 1=a \) for any number \( a \). Here, we have \( \square\times1 = 5 \), so the missing number should be 5 because \( 5\times1 = 5 \).

Step1: Recall zero property of multiplication

The zero property of multiplication states that \( 0\times a=0 \) for any number \( a \). So, \( 0\times9 = 0 \).

Step1: Recall commutative property of multiplication

The commutative property of multiplication states that \( a\times b=b\times a \). We have \( \square\times9 = 9\times7 \), so by the commutative property, the missing number is 7.

Answer:

5

Part (b)