Math Unit 3 Study guide

Ava measured the length of a shoe. She used 1-inch tiles and an inch ruler to measure the shoe, as shown below. Which sentence is true about the units Ava used to measure the length of the shoe?

• The measurement with the 1-inch tiles is bigger than the ruler.

• The measurement with the 1-inch tiles is smaller than the ruler.

• The measurement with the ruler is smaller than the 1-inch tiles.

• The measurement with the ruler is the same as the 1-inch tiles.

How many inches long is the screwdriver?

• 3 inches

• 4 inches

• 5 inches

• 6 inches

Which is closest to the height of a classroom door?

• 1 foot

• 7 feet

• 50 feet

• 20 feet

Kate wants to measure the difference, in centimeters, between her paper clip and eraser. What is the difference between the two?

• 3 inches

• 5 inches

• 8 inches

• 11 inches

Sean measures a pen and a notebook from his desk. How many centimeters shorter is the notebook is than the pen?

• 7

• 4

• 15

• 11

Billy had 71 crayons. He gave 16 crayons to Leah. How many crayons does Billy has left?

• 45

• 55

• 65

• 87

Rico had 55 feet of rope. He cut off and used 19 feet of the rope. How much rope does he have left?

• 16 feet

• 44 feet

• 36 feet

• 74 feet

Two desks are stacked on top of each other. One desk is 29 inches tall. The other box is 34 inches tall. What is the total height of the stack of boxes?

• 7 inches

• 53 inches

• 63 inches

• 62 inches

The zoo keeper measured two turtles at the exhibit. One was 21 inches long and one was 13 inches long. What is the difference in length between the two turtles?

• 38 inches

• 12 inches

• 18 inches

• 8 inches