Subtraction within 20

Solve

15 - 6 =

• 9

• 10

• 21

• 0

Tags

CCSS.1.OA.A.1

Solve.

19 - 10 =

• 9

• 0

• 29

• 19

Tags

CCSS.1.OA.A.1

CCSS.1.OA.C.6

Use a number line to solve.

20 - 8 =

• 20

• 8

• 12

• 28

Tags

CCSS.1.OA.A.1

CCSS.1.OA.C.6

Use a number line to solve.

14 - 7 =

• 7

• 14

• 9

• 21

Tags

CCSS.1.OA.A.1

CCSS.1.OA.C.6

Choose the number sentence that matches the word problem.

Mom has 18 flowers. She picks 6 of them. How many flowers does mom have left?

• 6+12=18

• 18-6=12

• 20-18=2

• 15-1=14

Tags

CCSS.1.OA.A.1

CCSS.1.OA.C.6

Solve.

There were 11 bats in a cave. 7 bats fly out. How many bats are left in the cave?

• 0

• 7

• 11

• 4

Tags

CCSS.1.OA.A.1

CCSS.1.OA.C.6

CCSS.1.OA.D.8

Which number sentence complete the fact family?

5+2=7

__+__=__

7-5=2

7-2=5

• 2+5=7

• 7+5=12

• 7+2=9

• 7-0=7

Tags

CCSS.1.OA.A.1

CCSS.1.OA.C.6

CCSS.1.OA.D.7

CCSS.1.OA.D.8

Which shows the fact family for 6, 4, 10

• 5+2=7

  2+5=7

  7-5=2

  7-2=5

• 3+7=10

  7+3=10

  10-3=7

  10-7=3

• 6+4=10

  4+6=10

  10-4=6

  10-6=4

Tags

CCSS.K.OA.A.1

CCSS.K.OA.A.2

CCSS.K.OA.A.3

Solve.

16 - 3 =

• 10

• 3

• 16

• 13

Tags

CCSS.1.OA.A.1

CCSS.1.OA.C.6

Solve.

15 - 12 =

• 3

• 15

• 12

• 27

Tags

CCSS.1.OA.A.1

CCSS.1.OA.C.6

CCSS.1.OA.D.7