U7 Equation Detectives: Find the Clues, Ignore the Extras!

A zoo has 432 tickets to sell. The tickets are divided equally over 9 days. How many tickets are sold each day?

Which equation could be used to find how many tickets are sold each day?

• x = 432 + 9
  

• x = 432 − 9
  

• x = 432 ÷ 9
  

• x = 9 ÷ 432

Tags

CCSS.3.OA.A.3

Sarah baked 384 cookies on Saturday and 216 cookies on Sunday. She wants to divide all the cookies evenly into 12 gift boxes. How many cookies will go in each box?

Which equation represents this situation?

• x = (384 + 216) ÷ 12

• x = 384 + (216 ÷ 12)

• x = 384 ÷ 12 + 216

• x = 384 − 216 ÷ 12

Tags

CCSS.3.OA.D.8

A classroom has 480 markers. After giving away 120 markers to another class, the rest are divided equally among 6 students.
How many markers does each student get?

Which equation could be used to find the answer?

• x = 480 ÷ 6 − 120

• x = 120 − 480 ÷ 6

• x = (480 − 120) ÷ 6

• x = (480 + 120) ÷ 6

Tags

CCSS.3.OA.D.8

Nora read 212 pages of her book on Monday and 148 pages on Tuesday. She wants to finish the book in the next 4 days, reading the same number of pages each day.
How many pages does she need to read each day to finish the book?

Which equation shows how to find the number of pages she should read each day?

• (212 − 148) ÷ 4 = x

• 212 ÷ 4 + 148 = x

• x = 4 ÷ 212 + 148

• x = (212 + 148) ÷ 4

Tags

CCSS.HSA.CED.A.3

A factory packs 624 toy cars into boxes. Each box holds 12 cars. The factory has 4 shelves to store the boxes.

How many boxes are needed to pack all the toy cars?

Which equation could be used to solve the problem?

• x = 624 ÷ 4

• x = (624 − 4) ÷ 12

• 624 ÷ (12 + 4) = x

• 624 ÷ 4 = x

Tags

CCSS.3.OA.D.8

A concert venue has 960 chairs arranged equally into 12 rows. There are 3 microphones set up on stage.

How many chairs are in each row?

Which equation could be used to solve the problem?

• x = (960 − 3) ÷ 12

• x = 960 ÷ 3

• x = 960 ÷ 12

• 960 ÷ (12 + 3) = x

Tags

CCSS.3.OA.D.8