Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.

Start Practicing

Worksheet: Addition and Subtraction Fact Families within 20

Q1:

We know that 8 plus 7 is 15. Here are the four number sentences for 8, 7, and 15.

Here are some number sentences for 5, 6, and 11. Which number sentence for 5, 6, and 11, is missing?

  • A 6 5 = 1 1
  • B 1 1 5 = 6
  • C 5 + 6 = 1 1
  • D 1 1 6 = 5
  • E 1 1 6 = 6

Q2:

We know that 7 + 3 = 1 0 .

What other facts do we know? Find the missing numbers.

Q3:

Which number sentence is wrong?

  • A 8 + 4 = 1 2
  • B 4 + 8 = 1 2
  • C 1 2 8 = 4
  • D 1 2 + 4 = 8
  • E 1 2 4 = 8

Q4:

Use 6 + 1 3 = 1 9 to fill in the blanks in these number sentences.

1 3 + = 1 9

1 9 6 =

1 3 = 6

Q5:

16 plus 3 is 19. Which number sentence is missing from the number sentences

  • A 1 9 1 6 = 3
  • B 1 6 3 = 1 3
  • C 1 9 3 = 1 4
  • D 1 9 3 = 1 6
  • E 1 6 + 3 = 1 9