### Home > ACC6 > Chapter 2 Unit 2 > Lesson CC1: 2.2.2 > Problem2-38

2-38.

Find the missing number that makes each of the following number sentences true.

1. $15 \cdot \ ? =90$

Rearrange the equation to solve for the unknown number.

$? = \frac{90}{15}$

$6$

1. $\frac{90}{?}=18$

• Rearrange the equation to solve for the unknown number.

$(18)(?)=90$

1. $6 \cdot \ ? = 96$

• Follow the steps in part (a).

$16$

1. $\frac{?}{11}=13$

• This is the same as $?=(13)(11)$.