Unit 5 Day 14 Choose the Expression

Otto practices his violin for 4.6 hours a day. Helen practices her violin for 4.35 hours a day. How much more time each day does Otto practice than Helen?

Choose the correct expression.

• 4.6 + 4.35

• 4.6 - 4.35

• 4.35 - 4.6

Gail can swim a lap in 15.7 seconds. Henry can swim the lap in 20.24 seconds. How much faster can Gail swim the lap?

Choose the correct expresssion.

• 20.24 + 15.7

• 15.7 - 20.24

• 20.24- 15.7

The recycling center collected 615.6 tons of paper this year. Last year, the recycling center collected 482.75 tons. How much more paper has been collected this year?

Choose the correct expression.

• 482.75 + 615.6

• 615.6 - 482.75

• 482.75 - 615.6

For Ben's birthday he invited friends over to watch movies. They ordered 1 pepperoni pizza and ate 0.33 of it. After the movie, the friends were talking and ate another 0.25 of the pizza. How much pizza will be left for Ben's family to have for lunch the next day?

Choose the correct expression.

• 1 + 0.25 + 0.33

• 0.33 + 0.25

• 1 - ( 0.33 - 0.25 )

• 1 - ( 0.25 + 0.33 )

The school secretary was making copies of flyers to send home with all the students in the school. She used 1.33 packs of paper in the morning. She then used another 3.456 packs of paper in the afternoon. If she had 7 packs of paper when she began, how many are left?

Choose the correct expression.

• 1.33 + 3.456 - 7

• (7 + 3.456) - 1.33

• 7 - ( 1.33 + 3.456)

• 7 + ( 3.456 - 1.33)

With breakfast, Cameron drank 1.45 cups of water. With lunch, he drank 2.84 cups of water. If he needs to drink 8 cups of water of a day, how much more water does he need to drink?

Choose the correct expression.

• 2.84 + 1.45 + 8

• 8 - ( 2.84 - 1.45 )

• (2.84 + 1.45 ) - 8

• 8 - ( 1.45 + 2.84)