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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 655 · 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. 1.5 + 8 =
  2. 2.4 + 1 + 5 =
  3. 3.Karan has 13 kites and gets 7 kites more. How many kites does Karan have now?
  4. 4.Diya has 8 laddoos and gets 9 laddoos more. How many laddoos does Diya have now?
  5. 5.19 + 1 =
  6. 6.5 + 1 =
  7. 7.There are 6 pink flowers and 2 green flowers. How many flowers are there in all?
  8. 8.15 + 1 =
  9. 9.11 + 3 =
  10. 10.1 + 4 + 15 =
  11. 11.10 + ? = 16
  12. 12.2 + ? = 16
  13. 13.7 + 11 =
  14. 14.3 + 8 + 4 =
  15. 15.There are 7 pink balloons and 11 green balloons. How many balloons are there in all?
  16. 16.14 + 3 =
  17. 17.6 + 1 + 3 =
  18. 18.2 + ? = 9
  19. 19.2 + 7 + 3 =
  20. 20.Pooja has 14 balls and gets 5 balls more. How many balls does Pooja have now?
  21. 21.Diya has 10 books and gets 8 books more. How many books does Diya have now?
  22. 22.3 + 7 + 4 =
  23. 23.There are 8 pink beads and 6 white beads. How many beads are there in all?
  24. 24.There are 12 blue beads and 6 white beads. How many beads are there in all?
  25. 25.There are 2 blue kites and 11 green kites. How many kites are there in all?
  26. 26.7 + 3 + 1 =
  27. 27.2 + ? = 4
  28. 28.There are 6 pink beads and 5 blue beads. How many beads are there in all?
  29. 29.There are 9 pink balls and 3 blue balls. How many balls are there in all?
  30. 30.7 + ? = 10
  31. 31.1 + 4 + 5 =
  32. 32.16 + ? = 18
  33. 33.2 + ? = 15
  34. 34.? + 10 = 20
  35. 35.? + 16 = 18
  36. 36.There are 5 yellow flowers and 7 pink flowers. How many flowers are there in all?
  37. 37.Ananya has 7 mangoes and gets 10 mangoes more. How many mangoes does Ananya have now?
  38. 38.3 + 6 + 1 =
  39. 39.Isha has 8 balls and gets 10 balls more. How many balls does Isha have now?
  40. 40.10 + ? = 20

Answer key

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

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