Review 3/21

For her homework, Lisa spent 42 minutes doing her math problems, 64 minutes doing her grammar homework, and 57 minutes reading. Which of the following is closest to the total time Lisa spent on her homework?

• A. 150 minutes

• B. 160 minutes

• C. 170 minutes

• D. 180 minutes

How many letters does Jerome have to deliver after lunch?

• $6

• $8

• $10

• $12

If Jill wanted to check her work for the equation 64 ÷ 8 = __, which equation should she use?

• 8 + __ = 64

• 64 - __ = 8

• 8 × __ = 64

• 64 ÷ __ = 8

If Jerry wanted to check his work for the equation 35 ÷ 7 = __, which equation should he use?

• 7 × __ = 35

• 35 × __ = 7

• 7 + __ = 35

• 35 − __ = 7

Which of the equations below could also help George figure out how many gummy worms each boy gets?

• 32 − __ = 8

• 8 × __ = 32

• __ + 8 = 32

• 32 + __ = 8

Find 36 ÷ 3 by finding the number that makes 36 when multiplied by 3.

• 9

• 6

• 12

• 18

Find 16 ÷ 8 by finding the number that makes 16 when multiplied by 8.

• 2

• 12

• 8

• 4

Rodrigo is doing an art project with square tiles. This picture shows his design. Rodrigo thinks: This part is 4 times 12 tiles. This part is 8 times 4 tiles. Rodrigo says, “I need (4×12) + (8×4) = 48 + 32 = 80 tiles to make the design.” Which statement explains why Rodrigo is not correct?

• Rodrigo multiplied 8×4 incorrectly.

• Rodrigo included the 16 squares in the middle twice.

• (4×12) does not equal (8×4).

• 48 + 32 does not equal 80.

If we know 8 x 11 = 88, then choose the correct equation.

• 8 x 88 = 11

• 88 x 11 = 8

• 11 ÷ 8 = 88

• 88 ÷ 8 = 11