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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 347 · 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. 1.6 + 10 =
  2. 2.Rohan has 11 pencils and gets 7 pencils more. How many pencils does Rohan have now?
  3. 3.There are 9 blue beads and 6 yellow beads. How many beads are there in all?
  4. 4.5 + 1 + 5 =
  5. 5.There are 8 blue beads and 2 red beads. How many beads are there in all?
  6. 6.There are 7 blue beads and 5 red beads. How many beads are there in all?
  7. 7.Pooja has 2 balloons and gets 13 balloons more. How many balloons does Pooja have now?
  8. 8.13 + 2 =
  9. 9.3 + 5 + 4 =
  10. 10.8 + 4 + 2 =
  11. 11.Rahul has 8 books and gets 1 book more. How many books does Rahul have now?
  12. 12.6 + 13 =
  13. 13.Dev has 9 books and gets 7 books more. How many books does Dev have now?
  14. 14.18 + 2 =
  15. 15.6 + 11 =
  16. 16.There are 12 yellow beads and 2 blue beads. How many beads are there in all?
  17. 17.Riya has 13 balls and gets 3 balls more. How many balls does Riya have now?
  18. 18.8 + 5 + 6 =
  19. 19.There are 7 white balloons and 5 green balloons. How many balloons are there in all?
  20. 20.? + 13 = 15
  21. 21.Karan has 13 pencils and gets 1 pencil more. How many pencils does Karan have now?
  22. 22.1 + 5 + 7 =
  23. 23.? + 3 = 10
  24. 24.10 + 3 =
  25. 25.4 + 1 + 11 =
  26. 26.2 + 6 + 2 =
  27. 27.? + 6 = 8
  28. 28.Isha has 9 pencils and gets 8 pencils more. How many pencils does Isha have now?
  29. 29.? + 10 = 19
  30. 30.11 + 2 =
  31. 31.15 + ? = 16
  32. 32.4 + 5 + 1 =
  33. 33.There are 7 red beads and 10 blue beads. How many beads are there in all?
  34. 34.There are 7 pink balloons and 11 yellow balloons. How many balloons are there in all?
  35. 35.5 + 12 =
  36. 36.7 + 4 + 9 =
  37. 37.Diya has 3 mangoes and gets 13 mangoes more. How many mangoes does Diya have now?
  38. 38.There are 3 green beads and 16 white beads. How many beads are there in all?
  39. 39.3 + ? = 6
  40. 40.19 + 1 =

Answer key

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

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