Module 3: Lesson 19

There are 9 packs of 8 markers. Which equation will help us find out how many total markers, m, there are?

• 9 x 8 = m

• 9 + m = 8

• m x 8 = 9

We found we started with 72 markers. Then students took some, or a. There were 19 markers left. What equation will tell us how many they took?

• 72 ÷ 19 = a

• 19 x 72 = a

• 72 - a = 19

• a + 72 = 19

Answer explanation

They had 72 markers and students TOOK some, or a. They were left with 19 markers.

9 x w = 45 OR 45 ÷ 9 = w so w equals...

• 5

• 54

• 7

• 36