1st Grade Fact Families and Equal Sign

What is a related fact? 9 + 2 = 11

• 9 + 1 = 10

• 11 - 11 = 0

• 11 - 2 = 9

• 11 + 2 = 13

Which equation belongs in this fact family?

4 + 5 = 9

5 + 4 = 9

9 - 4 = 5

• 9 + 4 = 13

• 5 - 4 = 1

• 9 - 5 = 4

• 5 + 9 = 14

Which equation is a related fact?

17 - 8 = 9

• 8 + 9 = 17

• 17 + 8 = 25

• 9 - 8 = 1

• 8 + 2 = 10

Which equation goes with this fact family?

• 15 + 5 = 20

• 5 + 10 = 15

• 10 + 10 = 20

What number completes this equation?

6 + ___ = 13

• 13

• 6

• 7

Which equation has the same sum?

4 + 6 = 10

• 10 - 6

• 4 + 10

• 6 + 4

Which equation has the same sum?

11 + 9 = 20

• 9 + 11

• 20 - 9

• 11 + 20

True or False?

5 + 3 = 3 + 5

• True

• False

True or False?

4 + 2 = 6 + 1

• True

• False

True or False?

8 + 2 = 5 + 5

• True

• False