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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 253 · 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.? + 2 = 3
  2. 2.Aditya has 2 laddoos and gets 12 laddoos more. How many laddoos does Aditya have now?
  3. 3.18 + 2 =
  4. 4.1 + 8 + 5 =
  5. 5.8 + 7 + 2 =
  6. 6.Manav has 12 laddoos and gets 7 laddoos more. How many laddoos does Manav have now?
  7. 7.8 + 1 =
  8. 8.Lakshmi has 8 mangoes and gets 10 mangoes more. How many mangoes does Lakshmi have now?
  9. 9.4 + ? = 10
  10. 10.There are 12 pink crayons and 6 blue crayons. How many crayons are there in all?
  11. 11.13 + ? = 14
  12. 12.7 + 7 + 3 =
  13. 13.3 + ? = 7
  14. 14.19 + 1 =
  15. 15.15 + ? = 19
  16. 16.There are 4 yellow kites and 7 blue kites. How many kites are there in all?
  17. 17.There are 10 pink balloons and 10 green balloons. How many balloons are there in all?
  18. 18.4 + 13 =
  19. 19.8 + 1 + 11 =
  20. 20.? + 5 = 11
  21. 21.8 + ? = 17
  22. 22.There are 4 green balloons and 4 red balloons. How many balloons are there in all?
  23. 23.? + 7 = 20
  24. 24.14 + 2 =
  25. 25.Diya has 4 books and gets 3 books more. How many books does Diya have now?
  26. 26.Kavya has 2 flowers and gets 2 flowers more. How many flowers does Kavya have now?
  27. 27.4 + 6 + 10 =
  28. 28.Aarav has 2 balloons and gets 9 balloons more. How many balloons does Aarav have now?
  29. 29.Diya has 7 flowers and gets 1 flower more. How many flowers does Diya have now?
  30. 30.There are 11 pink balloons and 9 green balloons. How many balloons are there in all?
  31. 31.10 + 6 =
  32. 32.There are 6 yellow balloons and 14 green balloons. How many balloons are there in all?
  33. 33.12 + ? = 18
  34. 34.7 + 6 =
  35. 35.There are 4 white crayons and 12 blue crayons. How many crayons are there in all?
  36. 36.There are 3 yellow beads and 15 green beads. How many beads are there in all?
  37. 37.There are 12 pink kites and 4 red kites. How many kites are there in all?
  38. 38.5 + ? = 16
  39. 39.11 + 1 =
  40. 40.8 + 4 + 8 =

Answer key

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

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