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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 34 · 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. 1.3 + 5 + 4 =
  2. 2.9 + 11 =
  3. 3.? + 6 = 7
  4. 4.3 + 4 =
  5. 5.? + 3 = 11
  6. 6.3 + 16 =
  7. 7.13 + ? = 20
  8. 8.Karan has 5 mangoes and gets 9 mangoes more. How many mangoes does Karan have now?
  9. 9.There are 4 pink kites and 2 yellow kites. How many kites are there in all?
  10. 10.? + 12 = 15
  11. 11.There are 12 blue beads and 7 pink beads. How many beads are there in all?
  12. 12.There are 6 blue balloons and 3 green balloons. How many balloons are there in all?
  13. 13.12 + 6 =
  14. 14.2 + 1 + 1 =
  15. 15.There are 10 green flowers and 7 red flowers. How many flowers are there in all?
  16. 16.6 + 9 =
  17. 17.? + 16 = 17
  18. 18.1 + 14 =
  19. 19.19 + 1 =
  20. 20.5 + 10 =
  21. 21.5 + 15 =
  22. 22.3 + 6 + 2 =
  23. 23.1 + ? = 3
  24. 24.There are 7 white kites and 5 red kites. How many kites are there in all?
  25. 25.There are 5 yellow kites and 14 red kites. How many kites are there in all?
  26. 26.6 + 7 + 6 =
  27. 27.14 + 5 =
  28. 28.Karan has 5 bananas and gets 11 bananas more. How many bananas does Karan have now?
  29. 29.8 + 4 =
  30. 30.14 + 1 =
  31. 31.15 + 2 =
  32. 32.2 + 2 + 1 =
  33. 33.4 + 7 + 7 =
  34. 34.8 + 2 + 9 =
  35. 35.7 + 6 + 7 =
  36. 36.Pooja has 2 flowers and gets 3 flowers more. How many flowers does Pooja have now?
  37. 37.4 + ? = 12
  38. 38.10 + 3 =
  39. 39.14 + 6 =
  40. 40.Saanvi has 14 kites and gets 1 kite more. How many kites does Saanvi have now?

Answer key

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

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