Fact Families and Tens Facts!

Fact Families

100

Could these numbers be in a fact family?

1, 9, 10

Yes! 1 + 9 = 10 

9 + 1 = 10 

10 - 9 = 1

10 - 1 = 9

200

Could these numbers be in a fact family?

8, 5, 3

Yes! 

3 + 5 = 8

5 + 3 = 8

8 - 5 = 3

8 - 3 = 5

300

Could these numbers be in a fact family?

3, 7, 9

No!

3 + 7 = 10

400

Could these numbers be in a fact family?

20, 5, 15

Yes! 

5 + 15 = 20

15 + 5 = 20

20 - 5 = 15

20 - 15 = 5

500

Could these numbers be in a fact family?

10, 4, 7

No!

4 + 7 = 11

Missing Fact Families

100

What is the missing problem in this fact family?

2 + 8 = 10

8 + 2 = 10

10 - 2 = 8

10 - 8 = 2

200

What is the missing problem in this fact family?

6 + 4 = 10

4 + 6 = 10

10 - 6 = 4

10 - 4 = 6

300

What is the missing problem in this fact family?

4 + 9 = 13

13 - 4 = 9

13 - 9 = 4

9 + 4 = 13

400

What is the missing problem in this fact family?

12 + 9 = 21

21 - 9 = 12

9 + 12 = 21

21 - 12 = 9

500

What is the missing problem in this fact family?

5 + 8 = 13

13 - 8 = 5

8 + 5 = 13

13 - 5 = 8

Mistakes in Fact Families

100

What is the mistake in this fact family?

9 + 1 = 10

1 + 9 = 10

9 - 10 = 1

10 - 1 = 9

9 - 10 = 1

200

What is the mistake in this fact family?

2 + 11 = 13

11 + 13 = 2

13 - 2 = 11

13 - 11 = 2

11 + 13 = 2

300

What is the mistake in this fact family?

14 + 6 = 20

6 + 14 = 20

20 - 6 = 14

14 - 20 = 6

14 - 20 = 6

400

What is the mistake in this fact family?

10 + 0 = 10

0 + 10 = 10

10 - 10 = 0

0 - 10 = 10

0 - 10 = 10

500

What is the mistake in this fact family?

5 + 5 = 10

10 - 5 = 5

5 - 10 = 5

5 - 10 = 5

Tens Facts

100

3 and ?

7

200

10 and ?

0

300

6 and ?

4

400

8 and ?

2

500

1 and ?

9

Missing Tens Facts

100

3 + ? = 10

7

200

10 - 2 = ?

8

300

? - 4 = 6

10

400

? - 5 = 5

10

500

10 - 4 = ?

6