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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 812 · 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. 1.4 + 9 =
  2. 2.Nisha has 6 shells and gets 2 shells more. How many shells does Nisha have now?
  3. 3.4 + 7 + 2 =
  4. 4.Rahul has 3 marbles and gets 9 marbles more. How many marbles does Rahul have now?
  5. 5.5 + 3 + 11 =
  6. 6.4 + 4 + 7 =
  7. 7.18 + 1 =
  8. 8.17 + 1 =
  9. 9.2 + ? = 5
  10. 10.2 + 5 =
  11. 11.6 + ? = 7
  12. 12.7 + 8 + 2 =
  13. 13.6 + 6 + 6 =
  14. 14.8 + 6 + 6 =
  15. 15.? + 13 = 15
  16. 16.2 + 7 + 9 =
  17. 17.2 + 2 =
  18. 18.17 + 3 =
  19. 19.Vivaan has 15 laddoos and gets 3 laddoos more. How many laddoos does Vivaan have now?
  20. 20.8 + 2 =
  21. 21.4 + 8 + 7 =
  22. 22.Kavya has 4 bananas and gets 15 bananas more. How many bananas does Kavya have now?
  23. 23.4 + 3 + 12 =
  24. 24.There are 8 blue balloons and 6 yellow balloons. How many balloons are there in all?
  25. 25.5 + 1 + 4 =
  26. 26.5 + 10 =
  27. 27.There are 5 green balloons and 10 white balloons. How many balloons are there in all?
  28. 28.8 + 5 + 3 =
  29. 29.There are 6 pink flowers and 5 green flowers. How many flowers are there in all?
  30. 30.There are 3 pink flowers and 16 white flowers. How many flowers are there in all?
  31. 31.Karan has 12 flowers and gets 6 flowers more. How many flowers does Karan have now?
  32. 32.19 + 1 =
  33. 33.5 + 12 =
  34. 34.15 + 5 =
  35. 35.Meera has 5 bananas and gets 12 bananas more. How many bananas does Meera have now?
  36. 36.5 + 8 =
  37. 37.5 + ? = 8
  38. 38.3 + 9 =
  39. 39.There are 7 yellow kites and 6 green kites. How many kites are there in all?
  40. 40.There are 12 white flowers and 4 red flowers. How many flowers are there in all?

Answer key

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

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