Multiplicative Comparisons

Ken has 5 pencils. Joey has 4 times as many pencils as Ken has. Which equation can be used to find the number of pencils Joey has?

• 5 + 4 = P

• 5 x 4 = P

• 5 x 5 x 5 x 5 x 5 = P

• 4 + 4 + 4 + 4 = P

Tags

CCSS.4.OA.A.1

Eric is 6 years old. He is 2 times as old as Lyla.

Which equation can be used to find Lyla’s age, a

• a x 6 = 2

• 2 + a = 6

• 6 ÷ 2 = a

• 6 - 2 = a

Tags

CCSS.4.OA.A.1

Amanda buys a wallet and a pair of shoes. The cost of the pair of shoes is 3 times the cost of the wallet.

What is the cost of the wallet if the pair of shoes costs $24?

• 24 ÷ 3 = $8

• 24 x 3 = $72

• 24 - 3 = $21

• 3 x 6 = $18

Tags

CCSS.4.OA.A.2

Students in a gym class are separated into 3

groups for an activity. Each group has the same number of students.

If the class has 21 students, which two equations can be used to find the number of students, s, in each group?

• s + 3 = 21

• s x 3 = 21

• s ÷ 3 = 21

• 21 ÷ 3 = s

• 21 x 3 = s

Tags

CCSS.3.OA.A.3

Carly and Travis are collecting shells on the beach. Carly collects 7 shells. Travis collects 4 times the number of shells that Carly collects.

How many shells does Travis collect?

• 7 - 4 = 3 shells

• 7 + 4 = 11 shells

• 7 x 4 = 28 shells

• 7 x 4 = 32 shells

Tags

CCSS.4.OA.A.2

Caroline went to the mall and bought a CD and book. The book she purchased costs $24, and it costs 3 times more than the CD.

Which pair of equations would help you determine the cost of the CD (c) ?

• 24 ÷ 3 = c or 3 × c =24

• 3 × 24 = c or 24 ÷ 3 = c

• 24 ÷ 3 = c or 3 × 24 = c

• 3 x c = 24 or c ÷ 24 = 3

Tags

CCSS.4.OA.A.2