Number Partners
Subtraction
Unknown Numbers
100

What are the partners of 5?

0+5, 1+4, 2+3
100

3 + 2

5

100

8 - 5

3

100

4 + __ = 7

3

100

6 + 5

11

200

What are the partners of 6?

0+6, 1+5, 2+4, 3+3
200

7 + 3

10

200

10 - 3

7

200

6 + __ = 10

4
200

9 + 5

14

300

What are the partners of 8?

0+8, 1+7, 2+6, 3+5, 4+4

300

Write an equation for this math story:

There are 5 children playing soccer. Then 3 more children come. Now 8 children are playing soccer.

5 + 3 = 8

300

Write a math equation for this story:

8 girls are playing soccer. Then 2 girls go home. Now there are 6 girls left.

8 - 2 = 6

300

Solve the math story:

I bought 5 pencils yesterday. Today I bought more pencils. Now I have 7 pencils in all. How many pencils did I buy today?

2 pencils

5 + 2 = 7 or 7 - 5 = 2

300

Molly has a bag of 10 peanuts and 3 extra peanuts. How many peanuts does she have altogether?

13 peanuts

10 + 3 = 13

400

What are the partners of 9?

0+9, 1+8, 2+7, 3+6, 4+5
400

Solve this story problem:

There are 5 cups in the cabinet. I put 4 more cups in the cabinet. How many cups are in the cabinet now?

9 cups

5 + 4 = 9

400

Solve this story problem:

Sergio has 7 action figures. He loses 4 of them. How many action figures does he now have?

3 action figures

7-4=3

400

There are 8 boys at the park. Some boys go home. Now there are 4 boys at the park. How many boys went home?

4 boys

8 - 4 = 4

4+4= 8

400

9 alligators swim in the river. Then 7 more alligators jump in. How many alligators are in the river now?

16 alligators

9 + 7 = 16

500

What are the partners of 10?

0+10, 1+9, 2+8, 3+7, 4+6, 5+5
500

Tell me a math story for the equation 3 + 6.

Example:

I had 3 books. I checked out 6 more books from the library. How many books do I have now?

500
Tell me a math story for this equation: 6 - 5

Ramona has 6 sweaters. She takes 5 of them with her to camp. How many sweaters are left?

500

Jake has 6 peaches. He wants to put some on 2 plates. How many can he put on each plate? Show 4 answers

0 + 6

1 + 5

2 + 4

3 + 3

500

What are all the doubles to 20? And their answers?

1 + 1 = 2

2+2 = 4

3+3 =6

4 + 4 = 8

5 +5 = 10

6 + 6 = 12

7 + 7 = 14

8 + 8 = 16

9 + 9 = 18

10 + 10 = 20