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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 903 · 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.? + 13 = 15
  2. 2.10 + 7 =
  3. 3.Isha has 2 marbles and gets 4 marbles more. How many marbles does Isha have now?
  4. 4.1 + ? = 4
  5. 5.Farhan has 14 pencils and gets 2 pencils more. How many pencils does Farhan have now?
  6. 6.3 + 2 + 4 =
  7. 7.There are 7 blue crayons and 12 white crayons. How many crayons are there in all?
  8. 8.2 + 4 + 2 =
  9. 9.1 + ? = 14
  10. 10.4 + 4 + 8 =
  11. 11.10 + ? = 14
  12. 12.6 + 5 + 8 =
  13. 13.Tara has 12 mangoes and gets 2 mangoes more. How many mangoes does Tara have now?
  14. 14.Diya has 5 kites and gets 3 kites more. How many kites does Diya have now?
  15. 15.There are 3 green beads and 2 blue beads. How many beads are there in all?
  16. 16.Nisha has 3 shells and gets 9 shells more. How many shells does Nisha have now?
  17. 17.2 + 3 + 10 =
  18. 18.1 + 6 =
  19. 19.There are 6 blue beads and 9 red beads. How many beads are there in all?
  20. 20.8 + 6 + 4 =
  21. 21.7 + 8 + 3 =
  22. 22.There are 10 yellow balls and 5 pink balls. How many balls are there in all?
  23. 23.5 + 4 + 10 =
  24. 24.There are 3 blue flowers and 17 white flowers. How many flowers are there in all?
  25. 25.Isha has 4 laddoos and gets 13 laddoos more. How many laddoos does Isha have now?
  26. 26.Gurpreet has 3 shells and gets 9 shells more. How many shells does Gurpreet have now?
  27. 27.There are 5 red flowers and 7 pink flowers. How many flowers are there in all?
  28. 28.2 + ? = 5
  29. 29.Dev has 14 marbles and gets 5 marbles more. How many marbles does Dev have now?
  30. 30.11 + ? = 17
  31. 31.Kavya has 10 pencils and gets 4 pencils more. How many pencils does Kavya have now?
  32. 32.Dev has 3 marbles and gets 9 marbles more. How many marbles does Dev have now?
  33. 33.There are 3 red flowers and 9 green flowers. How many flowers are there in all?
  34. 34.? + 1 = 3
  35. 35.8 + 3 + 2 =
  36. 36.3 + ? = 9
  37. 37.7 + 1 =
  38. 38.Rohan has 2 flowers and gets 16 flowers more. How many flowers does Rohan have now?
  39. 39.There are 2 white balls and 12 yellow balls. How many balls are there in all?
  40. 40.1 + 7 =

Answer key

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

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