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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 712 · 40 sums
TalentJR

The method (Count on): Start with the bigger number. Count on the smaller number, one finger at a time. For a missing number (8 + ? = 15), count on from 8 up to 15, or take away: 15 − 8.

NameDateTime takenScore ___ / 40
  1. 1.6 + 1 + 4 =
  2. 2.1 + ? = 11
  3. 3.There are 12 red flowers and 8 pink flowers. How many flowers are there in all?
  4. 4.8 + 2 + 1 =
  5. 5.? + 3 = 17
  6. 6.There are 11 green balls and 3 white balls. How many balls are there in all?
  7. 7.2 + 3 + 5 =
  8. 8.Dev has 7 flowers and gets 3 flowers more. How many flowers does Dev have now?
  9. 9.5 + ? = 20
  10. 10.7 + 5 =
  11. 11.Pooja has 11 bananas and gets 4 bananas more. How many bananas does Pooja have now?
  12. 12.Aarav has 7 shells and gets 13 shells more. How many shells does Aarav have now?
  13. 13.Zoya has 11 kites and gets 2 kites more. How many kites does Zoya have now?
  14. 14.1 + 2 =
  15. 15.There are 3 green balloons and 14 red balloons. How many balloons are there in all?
  16. 16.11 + 4 =
  17. 17.12 + 3 =
  18. 18.1 + 2 + 3 =
  19. 19.? + 7 = 10
  20. 20.1 + 5 + 1 =
  21. 21.17 + 2 =
  22. 22.? + 9 = 20
  23. 23.Ananya has 2 pencils and gets 12 pencils more. How many pencils does Ananya have now?
  24. 24.4 + ? = 8
  25. 25.10 + 2 =
  26. 26.2 + ? = 18
  27. 27.5 + 15 =
  28. 28.1 + 4 + 14 =
  29. 29.2 + ? = 5
  30. 30.13 + 2 =
  31. 31.14 + 2 =
  32. 32.4 + 2 =
  33. 33.8 + ? = 16
  34. 34.Diya has 14 balls and gets 3 balls more. How many balls does Diya have now?
  35. 35.5 + ? = 12
  36. 36.Joseph has 8 marbles and gets 9 marbles more. How many marbles does Joseph have now?
  37. 37.8 + 6 =
  38. 38.7 + 7 =
  39. 39.Gurpreet has 14 flowers and gets 4 flowers more. How many flowers does Gurpreet have now?
  40. 40.4 + 2 + 5 =

Answer key

  1. 11
  2. 10
  3. 20
  4. 11
  5. 14
  6. 14
  7. 10
  8. 10
  9. 15
  10. 12
  11. 15
  12. 20
  13. 13
  14. 3
  15. 17
  16. 15
  17. 15
  18. 6
  19. 3
  20. 7
  21. 19
  22. 11
  23. 14
  24. 4
  25. 12
  26. 16
  27. 20
  28. 19
  29. 3
  30. 15
  31. 16
  32. 6
  33. 8
  34. 17
  35. 7
  36. 17
  37. 14
  38. 14
  39. 18
  40. 11

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