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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 109 · 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.Pooja has 3 shells and gets 1 shell more. How many shells does Pooja have now?
  2. 2.There are 11 red crayons and 4 blue crayons. How many crayons are there in all?
  3. 3.1 + 4 + 4 =
  4. 4.14 + ? = 19
  5. 5.There are 2 yellow balls and 6 white balls. How many balls are there in all?
  6. 6.There are 6 green beads and 14 white beads. How many beads are there in all?
  7. 7.Aarav has 11 crayons and gets 2 crayons more. How many crayons does Aarav have now?
  8. 8.2 + 15 =
  9. 9.2 + ? = 19
  10. 10.1 + 3 + 10 =
  11. 11.Arjun has 4 marbles and gets 16 marbles more. How many marbles does Arjun have now?
  12. 12.Tara has 3 balls and gets 4 balls more. How many balls does Tara have now?
  13. 13.There are 12 red crayons and 3 green crayons. How many crayons are there in all?
  14. 14.Ananya has 15 pencils and gets 5 pencils more. How many pencils does Ananya have now?
  15. 15.12 + 1 =
  16. 16.1 + 2 + 17 =
  17. 17.There are 4 green flowers and 7 red flowers. How many flowers are there in all?
  18. 18.There are 12 yellow beads and 3 blue beads. How many beads are there in all?
  19. 19.Vivaan has 15 books and gets 2 books more. How many books does Vivaan have now?
  20. 20.3 + 1 + 6 =
  21. 21.There are 12 blue kites and 6 white kites. How many kites are there in all?
  22. 22.? + 9 = 16
  23. 23.13 + 4 =
  24. 24.Sneha has 5 balls and gets 1 ball more. How many balls does Sneha have now?
  25. 25.5 + 2 + 10 =
  26. 26.2 + ? = 17
  27. 27.6 + ? = 20
  28. 28.17 + 3 =
  29. 29.2 + 3 + 9 =
  30. 30.4 + 2 + 14 =
  31. 31.1 + ? = 7
  32. 32.5 + 7 + 7 =
  33. 33.? + 1 = 4
  34. 34.6 + ? = 8
  35. 35.There are 10 pink kites and 6 white kites. How many kites are there in all?
  36. 36.Nisha has 4 mangoes and gets 12 mangoes more. How many mangoes does Nisha have now?
  37. 37.6 + 10 =
  38. 38.? + 2 = 13
  39. 39.Manav has 7 books and gets 4 books more. How many books does Manav have now?
  40. 40.? + 1 = 13

Answer key

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

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