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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 701 · 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. 1.17 + 1 =
  2. 2.5 + ? = 6
  3. 3.18 + 1 =
  4. 4.There are 10 red balls and 8 green balls. How many balls are there in all?
  5. 5.1 + 1 =
  6. 6.There are 9 green beads and 5 red beads. How many beads are there in all?
  7. 7.16 + 2 =
  8. 8.Isha has 8 balls and gets 9 balls more. How many balls does Isha have now?
  9. 9.There are 7 yellow balls and 4 pink balls. How many balls are there in all?
  10. 10.1 + ? = 11
  11. 11.2 + 1 + 8 =
  12. 12.? + 13 = 17
  13. 13.Kavya has 4 marbles and gets 14 marbles more. How many marbles does Kavya have now?
  14. 14.4 + ? = 6
  15. 15.Rahul has 15 laddoos and gets 5 laddoos more. How many laddoos does Rahul have now?
  16. 16.? + 3 = 5
  17. 17.There are 2 red balloons and 6 white balloons. How many balloons are there in all?
  18. 18.6 + 7 + 7 =
  19. 19.Pooja has 11 balls and gets 6 balls more. How many balls does Pooja have now?
  20. 20.3 + 1 + 9 =
  21. 21.There are 11 yellow balloons and 4 red balloons. How many balloons are there in all?
  22. 22.? + 9 = 13
  23. 23.Rahul has 13 marbles and gets 7 marbles more. How many marbles does Rahul have now?
  24. 24.13 + 3 =
  25. 25.There are 6 green balls and 13 red balls. How many balls are there in all?
  26. 26.? + 2 = 4
  27. 27.Kabir has 7 flowers and gets 10 flowers more. How many flowers does Kabir have now?
  28. 28.Tara has 13 shells and gets 6 shells more. How many shells does Tara have now?
  29. 29.Priya has 15 pencils and gets 5 pencils more. How many pencils does Priya have now?
  30. 30.There are 6 red beads and 14 pink beads. How many beads are there in all?
  31. 31.3 + 7 + 8 =
  32. 32.1 + ? = 7
  33. 33.16 + 1 =
  34. 34.Saanvi has 6 balloons and gets 2 balloons more. How many balloons does Saanvi have now?
  35. 35.Saanvi has 9 shells and gets 6 shells more. How many shells does Saanvi have now?
  36. 36.4 + 7 + 3 =
  37. 37.There are 11 pink flowers and 8 red flowers. How many flowers are there in all?
  38. 38.Meera has 11 books and gets 3 books more. How many books does Meera have now?
  39. 39.? + 7 = 15
  40. 40.1 + 14 =

Answer key

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

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