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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 650 · 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.There are 6 white balls and 13 yellow balls. How many balls are there in all?
  2. 2.7 + 3 + 1 =
  3. 3.There are 5 red balls and 10 yellow balls. How many balls are there in all?
  4. 4.4 + 3 + 4 =
  5. 5.6 + 5 + 1 =
  6. 6.Priya has 15 balloons and gets 1 balloon more. How many balloons does Priya have now?
  7. 7.4 + 2 + 2 =
  8. 8.There are 10 blue balls and 6 red balls. How many balls are there in all?
  9. 9.There are 12 pink flowers and 3 green flowers. How many flowers are there in all?
  10. 10.5 + 3 + 9 =
  11. 11.2 + 2 + 15 =
  12. 12.9 + 5 =
  13. 13.7 + ? = 10
  14. 14.There are 7 green flowers and 2 yellow flowers. How many flowers are there in all?
  15. 15.Isha has 8 balloons and gets 12 balloons more. How many balloons does Isha have now?
  16. 16.Arjun has 2 kites and gets 2 kites more. How many kites does Arjun have now?
  17. 17.1 + 6 + 6 =
  18. 18.Vivaan has 15 marbles and gets 5 marbles more. How many marbles does Vivaan have now?
  19. 19.Kavya has 11 books and gets 5 books more. How many books does Kavya have now?
  20. 20.There are 9 green balloons and 2 white balloons. How many balloons are there in all?
  21. 21.3 + 17 =
  22. 22.There are 6 green balls and 5 pink balls. How many balls are there in all?
  23. 23.There are 10 white balls and 3 blue balls. How many balls are there in all?
  24. 24.4 + 2 =
  25. 25.Ananya has 12 pencils and gets 1 pencil more. How many pencils does Ananya have now?
  26. 26.? + 1 = 5
  27. 27.12 + 4 =
  28. 28.Diya has 4 laddoos and gets 6 laddoos more. How many laddoos does Diya have now?
  29. 29.There are 9 pink beads and 3 red beads. How many beads are there in all?
  30. 30.4 + 7 + 8 =
  31. 31.There are 10 pink beads and 9 blue beads. How many beads are there in all?
  32. 32.11 + 6 =
  33. 33.There are 4 red balloons and 3 pink balloons. How many balloons are there in all?
  34. 34.There are 2 blue kites and 10 green kites. How many kites are there in all?
  35. 35.Kabir has 5 flowers and gets 13 flowers more. How many flowers does Kabir have now?
  36. 36.9 + 1 =
  37. 37.There are 12 pink kites and 8 white kites. How many kites are there in all?
  38. 38.10 + 4 =
  39. 39.? + 2 = 4
  40. 40.8 + 11 =

Answer key

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

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