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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 853 · 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. 1.1 + 5 =
  2. 2.5 + ? = 16
  3. 3.19 + 1 =
  4. 4.Tara has 4 crayons and gets 7 crayons more. How many crayons does Tara have now?
  5. 5.18 + ? = 20
  6. 6.13 + ? = 18
  7. 7.Nisha has 14 mangoes and gets 3 mangoes more. How many mangoes does Nisha have now?
  8. 8.Riya has 13 laddoos and gets 2 laddoos more. How many laddoos does Riya have now?
  9. 9.2 + 9 =
  10. 10.2 + 4 + 13 =
  11. 11.Kavya has 5 shells and gets 11 shells more. How many shells does Kavya have now?
  12. 12.4 + 1 + 9 =
  13. 13.There are 8 blue balloons and 4 green balloons. How many balloons are there in all?
  14. 14.? + 6 = 7
  15. 15.? + 18 = 19
  16. 16.4 + 16 =
  17. 17.9 + 8 =
  18. 18.4 + 11 =
  19. 19.Arjun has 13 books and gets 3 books more. How many books does Arjun have now?
  20. 20.2 + ? = 17
  21. 21.Aditya has 10 balloons and gets 2 balloons more. How many balloons does Aditya have now?
  22. 22.There are 10 pink beads and 7 blue beads. How many beads are there in all?
  23. 23.17 + 2 =
  24. 24.Farhan has 14 kites and gets 3 kites more. How many kites does Farhan have now?
  25. 25.? + 2 = 3
  26. 26.There are 4 yellow balls and 4 white balls. How many balls are there in all?
  27. 27.5 + ? = 20
  28. 28.15 + 4 =
  29. 29.There are 3 red flowers and 2 pink flowers. How many flowers are there in all?
  30. 30.1 + ? = 6
  31. 31.17 + 3 =
  32. 32.? + 11 = 17
  33. 33.There are 6 pink balloons and 2 blue balloons. How many balloons are there in all?
  34. 34.Nisha has 12 books and gets 7 books more. How many books does Nisha have now?
  35. 35.2 + ? = 7
  36. 36.Gurpreet has 7 flowers and gets 7 flowers more. How many flowers does Gurpreet have now?
  37. 37.4 + 8 + 6 =
  38. 38.Ananya has 14 laddoos and gets 6 laddoos more. How many laddoos does Ananya have now?
  39. 39.2 + 3 + 15 =
  40. 40.17 + 1 =

Answer key

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

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