Topic 4 Review

Mr. Luca bought 28 notebooks. Each notebook has 54 pages. Which expression shows a good way to use rounding to estimate the total number of pages in the notebooks Mr. Luca purchased?

• 20 x 50

• 20 x 60

• 30 x 50

• 28 x 60

There are 23 students in Mrs. Lee’s class. Each student has a box containing 28 pastel crayons. Use compatible numbers to estimate the total number of pastel crayons in Mrs. Lee’s class.

• 20 x 30

• 25 x 30

• 30 x 30

• 23 x 28

The pizza parlor uses 20 pieces of pepperoni on each large pizza. The pizza parlor made 60 large pizzas. How many pieces of pepperoni were used on the large pizzas?

• 40 pieces

• 120 pieces

• 1,200 pieces

• 12,000 pieces

Joey’s scout troop is building 14 birdhouses. Each birdhouse uses 30 nails. How many nails does the troop need in all?

• 42 nails

• 120 nails

• 420 nails

• 4,200 nails

Ms. Suh bought dinner plates for her restaurant. Each box of plates costs $40. How much money would Ms. Suh spend on 80 boxes of plates?

• $600

• $800

• $1,400

• $3,200

Ms. Suh bought dinner plates for her restaurant. Each box of plates costs $40. How much money would Ms. Suh spend on 35 boxes of plates?

• $600

• $800

• $1,400

• $3,200

Ms. Suh bought dinner plates for her restaurant. Each box of plates costs $40. How much money would Ms. Suh spend on 20 boxes of plates?

• $600

• $800

• $1,400

• $3,200

Ms. Suh bought dinner plates for her restaurant. Each box of plates costs $40. How much money would Ms. Suh spend on 15 boxes of plates?

• $600

• $800

• $1,400

• $3,200

A bakery has 12 bins of bagels. Each bin is filled with 37 bagels. How many bagels does the bakery have? Solve this problem using any strategy you choose.

• 110 bagels

• 120 bagels

• 327 bagels

• 444 bagels

Mrs. Ander’s garden has 12 rows of blue flowers. Each row contains 16 blue flowers. Write and solve an equation to find the number of blue flowers in Mrs. Ander’s garden.

• 12 x 16 = 192

• 12 + 16 = 192

• 12 x 16 = 84

• 12 + 16 = 28