Whole number skills: Missing numbers

Use the relationship between addition and subtraction to find the missing number.

Ready-to-use practice

12 whole number skills: missing numbers questions

These questions are already present in the page HTML and use the same difficulty rules as the interactive practice tool.

  1. 3 + □ = 9
  2. 6 − □ = 5
  3. 11 + □ = 20
  4. □ + 2 = 10
  5. □ + 7 = 16
  6. 14 − □ = 5
  7. □ + 6 = 11
  8. □ + 16 = 17
  9. □ − 3 = 16
  10. 7 − □ = 4
  11. 12 − □ = 5
  12. 20 − □ = 18
Show sample answers
  1. 3 + □ = 96
  2. 6 − □ = 51
  3. 11 + □ = 209
  4. □ + 2 = 108
  5. □ + 7 = 169
  6. 14 − □ = 59
  7. □ + 6 = 115
  8. □ + 16 = 171
  9. □ − 3 = 1619
  10. 7 − □ = 43
  11. 12 − □ = 57
  12. 20 − □ = 182