Fun with Length: Add, Subtract, and Estimate! (Grade 3)

Lily has a ribbon that is 12 inches long. She cuts off 5 inches. How long is the ribbon now?

• 7 inches

• 10 inches

• 8 inches

• 6 inches

A pencil is 7 inches long. If Tom has 3 pencils, what is the total length of all the pencils?

• 14 inches

• 18 inches

• 21 inches

• 24 inches

A book is 8 inches tall and a notebook is 6 inches tall. What is the total height of both when stacked?

• 10 inches

• 12 inches

• 16 inches

• 14 inches

Sam measured his toy car and found it to be 10 inches long. He wants to buy a new car that is 15 inches long. How much longer is the new car than the toy car?

• 3 inches

• 5 inches

• 20 inches

• 10 inches

Emma has a piece of string that is 20 inches long. She uses 8 inches for a craft project. How much string does she have left?

• 12 inches

• 15 inches

• 5 inches

• 10 inches

A garden is 5 feet wide and 10 feet long. What is the total length of the garden's perimeter?

• 20 feet

• 30 feet

• 25 feet

• 40 feet

If a door is 6 feet tall and a window is 3 feet tall, how much taller is the door than the window?

• 3 feet

• 2 feet

• 5 feet

• 4 feet

A rope is 25 inches long. If you cut it into two pieces, one piece is 10 inches long. How long is the other piece?

• 15 inches

• 5 inches

• 20 inches

• 12 inches

A classroom is 30 feet long. If the teacher wants to add a 5-foot long table, what will be the new total length of the classroom with the table?

• 30 feet

• 35 feet

• 40 feet

• 25 feet

You have a 50-inch long board. If you want to estimate how many 10-inch pieces you can cut from it, how many pieces can you make?

• 4

• 6

• 5

• 7