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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 993 · 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. 1.16 + 1 =
  2. 2.2 + 18 =
  3. 3.2 + 2 + 10 =
  4. 4.14 + 1 =
  5. 5.Gurpreet has 14 mangoes and gets 5 mangoes more. How many mangoes does Gurpreet have now?
  6. 6.Ananya has 10 pencils and gets 2 pencils more. How many pencils does Ananya have now?
  7. 7.7 + 2 =
  8. 8.Tara has 15 laddoos and gets 4 laddoos more. How many laddoos does Tara have now?
  9. 9.10 + ? = 15
  10. 10.There are 7 red crayons and 4 blue crayons. How many crayons are there in all?
  11. 11.Diya has 10 laddoos and gets 1 laddoo more. How many laddoos does Diya have now?
  12. 12.Rahul has 2 shells and gets 18 shells more. How many shells does Rahul have now?
  13. 13.2 + 4 + 7 =
  14. 14.Zoya has 2 pencils and gets 4 pencils more. How many pencils does Zoya have now?
  15. 15.11 + 5 =
  16. 16.1 + 4 + 14 =
  17. 17.12 + ? = 15
  18. 18.Gurpreet has 2 mangoes and gets 17 mangoes more. How many mangoes does Gurpreet have now?
  19. 19.2 + 8 + 2 =
  20. 20.Nisha has 2 pencils and gets 11 pencils more. How many pencils does Nisha have now?
  21. 21.? + 15 = 17
  22. 22.Vivaan has 8 pencils and gets 10 pencils more. How many pencils does Vivaan have now?
  23. 23.? + 6 = 13
  24. 24.? + 2 = 10
  25. 25.There are 10 white kites and 3 blue kites. How many kites are there in all?
  26. 26.13 + ? = 16
  27. 27.11 + 6 =
  28. 28.11 + ? = 14
  29. 29.15 + 4 =
  30. 30.7 + 8 + 4 =
  31. 31.1 + 13 =
  32. 32.9 + 9 =
  33. 33.6 + 4 + 3 =
  34. 34.? + 4 = 8
  35. 35.There are 10 red beads and 2 pink beads. How many beads are there in all?
  36. 36.There are 12 red kites and 4 green kites. How many kites are there in all?
  37. 37.9 + ? = 18
  38. 38.3 + 6 + 3 =
  39. 39.15 + 3 =
  40. 40.12 + 1 =

Answer key

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

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