Addition and Subtraction Within 100 to Solve Word Problems

Kelly found 9 bears in the toy basket. Stephen found some bears in the toy basket. They found 15 bears in all.

How many bears did Stephen find?

• 6

• 7

• 16

• 9

Fred saw 10 butterflies on Monday. On Tuesday, there were only 8. How many butterflies flew away?

• 5

• 7

• 2

• 1

Stephanie has 5 circles. The teacher gave her some more.

Now she has 14.

Which picture shows the number of circles Stephanie's teacher gave her?

• 
• 
• 
• 

There were 7 pieces of candy in the bowl. Alyson ate some pieces. Now there are 2 pieces in the bowl.

How many pieces of candy did Alyson eat?

• 5

• 6

• 2

• 4

Sara picked some apples on Monday.

Then she picked 7 more apples on Tuesday.

Sara has 13 apples in all.

How many apples did Sara pick on Monday?

• 20, because 13 + 7 = 20

• 6, because 13 - 7 = 6

• 13, because 7 + 6 = 13

• 5, because 13 - 5 = 8

You have 7 balloons and your friend has 5 balloons. How many more balloons do you have than your friend?

• 7 balloons

• 5 balloons

• 2 balloons

• 9 balloons

2 birds were sitting on the fence. 4 more birds came to join them. How many birds are sitting on the fence?

• 2 birds

• 6 birds

• 4 birds

• 24 birds

There were 10 students riding on the school bus. At the first stop, 3 students get off of the bus. How many students are left on the bus?

• 13 students
• 10 students
• 7 students
• 3 students

I have 10 dogs and 5 cats. How many animals do I have altogether?

• 10

• 5

• 15

I see some cats. 6 more cats come. Now there are 15 cats. How many cats were there first?

• 21, because 15 + 6 = 21

• 9, because 15 - 6 = 9

• 8, because 8 + 7 = 15

• 6, because 15 - 9 = 6