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Name: Date:

Solving “Change Unknown” Word Problems

Use the virtual two-color counters to solve each problem.

Ms. Nachman has 6 erasers in the morning.

Bill gave her some more erasers in the afternoon.

At the end of the day, Ms. Nachman had 10 erasers.

How many erasers did Bill give her?

Tyler had 8 crayons.

Ms. Nachman let him take some more crayons.

Now, Tyler has 13 crayons.

How many crayons did Tyler take?

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Joe started his day with 3 stickers.

He earned some more stickers throughout the day.

He earned 11 stickers in total.

How many stickers did Joe earn that day?