Grade 1 Math

Number Bonds to 10

On this page children practise splitting numbers into two parts and finding what is missing. Start with the short method and the examples, then use the online practice or print a worksheet with answers.

How to solve this

  • Look at the whole number first.
  • Find one part that is already shown.
  • Think: what number joins that part to make the whole?

Examples

10 = 6 + ?

4

8 = 3 + ?

5

Practice problems with answers

Solve these problems on paper or out loud, then check the answer key. The online practice and the printable worksheet give a new set every time.

  1. 5 = 2 + ___
  2. 6 = 3 + ___
  3. 6 = 2 + ___
  4. 8 = 4 + ___
  5. 10 = 2 + ___
  6. 2 = 1 + ___
  7. 3 = 2 + ___
  8. 4 = 2 + ___
Show answers
  1. 3
  2. 3
  3. 4
  4. 4
  5. 8
  6. 1
  7. 1
  8. 2

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