Adding and Subtracting Inches

Marco has one string that is 3 inches long. He has another string that is 5 inches long. How many inches of string does Marco have? Draw a diagram. Write a number sentence using a □ for the missing number. Solve.

• 8 inches of string

• 6 inches of string

• 9 inches of string

• 7 inches of string

Lea has one string that is 8 inches long. She cut 3 inches off the string. How many inches of string does Lea have now? Draw a diagram. Write a number sentence using a □ for the missing number. Solve.

• 5 inches of string

• 3 inches of string

• 8 inches of string

• 10 inches of string

Mike used a line plot to show the lengths of his toy dinosaurs. How many of his toy dinosaurs are 4 inches long?

• 4

• 2

• 6

• 1

Suppose one of Mike's toy dinosaurs that is 3 inches long broke and is thrown away. How should Mike change his plot?

• Remove the 3-inch dinosaur from the plot

• Add another 3-inch dinosaur to the plot

• Change the color of the 3-inch dinosaur in the plot

• Increase the length of the 3-inch dinosaur in the plot

What does Mike's line plot look like after one of the 3-inch toy dinosaurs is thrown away?

• There is one less X above 3 inches.

• There is one more X above 3 inches.

• There is one less X above 4 inches.

• There is one more X above 2 inches.