Topic 8 Math Review

Mrs. Quinn bought 20 tickets to the state fair for her students. The student ticket price was $9 each. How much did she spend on the tickets?

• $90
• $29
• $180
• $290

A class of 19 students is making a card for their teacher who is sick. Each student is given 6 minutes to add to the card. How much time is needed for the card to be completed?

• 114 minutes
• 120 minutes
• 66 minutes
• 69 minutes

In Omar's school, there are 8 fourth grade classrooms. Each classroom has about 27 students. Which is a reasonable estimate of the number of fourth graders in Omar's school?

• 180 because 8 × 27 is about 9 × 20 = 180
•  160 because 8 × 27 is about 8 × 20 = 160
• 300 because 8 × 27 is about 10 × 30 = 300
• 200 because 8 × 27 is about 8 × 25 = 200

Leora needs to solve 4 × 35. Which partial products will help her?

• 4 × 30 and 4 × 5
• 4 × 30 and 4 × 50
• 4 × 3 and 4 × 5
• 4 × 3 and 4 × 50

Larry baked 7 batches of bagels. There were 32 bagels in each batch. Which is the best estimate of how many bagels Larry baked?

• 240
• 210
• 140
• 100

Isobel wrote a number sentence with 50 as one factor and 300 as the product. What was the other factor?

• 6
• 50
• 5
• 60

Miles is selling his old toy cars for $5 each. He has 33 of them. What is the best estimate of how much money Miles will make if he sells all of his cars?

• $200
• $100
• $150
• $60

In a class, 21 students will present their science projects. Each student gets to talk for 5 minutes. How much time is needed to present all of the science projects?

• 95 minutes
• 105 minutes
• 45 minutes
•  100 minutes

A shipping carton holds 42 calculators. What is a reasonable estimate of the number of calculators in a shipment of 8 cartons?

• 400 because 8 × 42 is about 8 × 50 = 400
• 250 because 8 × 42 is about 5 × 50 = 250
•  320 because 8 × 42 is about 8 × 40 = 320
•  500 because 8 × 42 is about 10 × 50 = 500

A school will pay $7 admission for each of its 57 third graders to visit the aquarium. The principal needs to know how much this will cost. What partial products will help her?

• $350 and $49
• $35 and $49
• $7 and $57
• $350 and $490