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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 887 · 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.? + 14 = 16
  2. 2.10 + ? = 13
  3. 3.Dev has 7 balloons and gets 8 balloons more. How many balloons does Dev have now?
  4. 4.1 + ? = 3
  5. 5.Saanvi has 4 shells and gets 1 shell more. How many shells does Saanvi have now?
  6. 6.Riya has 13 balloons and gets 2 balloons more. How many balloons does Riya have now?
  7. 7.Sneha has 7 balloons and gets 5 balloons more. How many balloons does Sneha have now?
  8. 8.17 + 2 =
  9. 9.16 + 1 =
  10. 10.14 + 1 =
  11. 11.7 + 8 =
  12. 12.Ishaan has 2 mangoes and gets 8 mangoes more. How many mangoes does Ishaan have now?
  13. 13.Ishaan has 6 balls and gets 13 balls more. How many balls does Ishaan have now?
  14. 14.1 + ? = 17
  15. 15.There are 2 blue flowers and 6 red flowers. How many flowers are there in all?
  16. 16.13 + 3 =
  17. 17.11 + 4 =
  18. 18.14 + 6 =
  19. 19.? + 11 = 17
  20. 20.Zoya has 14 shells and gets 5 shells more. How many shells does Zoya have now?
  21. 21.Karan has 3 flowers and gets 3 flowers more. How many flowers does Karan have now?
  22. 22.Rohan has 4 kites and gets 1 kite more. How many kites does Rohan have now?
  23. 23.Riya has 12 pencils and gets 7 pencils more. How many pencils does Riya have now?
  24. 24.Riya has 12 shells and gets 2 shells more. How many shells does Riya have now?
  25. 25.Sneha has 13 laddoos and gets 5 laddoos more. How many laddoos does Sneha have now?
  26. 26.? + 4 = 7
  27. 27.8 + 1 + 9 =
  28. 28.1 + 8 + 2 =
  29. 29.Riya has 12 flowers and gets 7 flowers more. How many flowers does Riya have now?
  30. 30.4 + 6 + 6 =
  31. 31.9 + ? = 12
  32. 32.1 + 4 =
  33. 33.There are 11 green balls and 3 white balls. How many balls are there in all?
  34. 34.2 + 5 + 1 =
  35. 35.2 + 7 + 5 =
  36. 36.Lakshmi has 4 pencils and gets 15 pencils more. How many pencils does Lakshmi have now?
  37. 37.There are 9 blue kites and 2 green kites. How many kites are there in all?
  38. 38.5 + 2 =
  39. 39.7 + 2 + 7 =
  40. 40.3 + 5 + 5 =

Answer key

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

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