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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 793 · 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. 1.9 + 1 =
  2. 2.Isha has 6 flowers and gets 7 flowers more. How many flowers does Isha have now?
  3. 3.9 + 3 =
  4. 4.8 + 2 =
  5. 5.7 + 5 + 4 =
  6. 6.10 + ? = 20
  7. 7.14 + 4 =
  8. 8.5 + 12 =
  9. 9.15 + 1 =
  10. 10.There are 11 white beads and 2 red beads. How many beads are there in all?
  11. 11.Rohan has 12 flowers and gets 4 flowers more. How many flowers does Rohan have now?
  12. 12.1 + ? = 14
  13. 13.2 + 8 + 5 =
  14. 14.There are 6 blue balloons and 12 white balloons. How many balloons are there in all?
  15. 15.There are 2 pink crayons and 10 red crayons. How many crayons are there in all?
  16. 16.Karan has 11 flowers and gets 1 flower more. How many flowers does Karan have now?
  17. 17.4 + 2 + 8 =
  18. 18.There are 2 white kites and 3 red kites. How many kites are there in all?
  19. 19.Ananya has 2 balls and gets 16 balls more. How many balls does Ananya have now?
  20. 20.1 + 4 + 9 =
  21. 21.There are 8 red kites and 12 yellow kites. How many kites are there in all?
  22. 22.15 + 4 =
  23. 23.13 + 3 =
  24. 24.? + 13 = 15
  25. 25.? + 5 = 10
  26. 26.4 + 3 + 8 =
  27. 27.There are 9 pink flowers and 7 red flowers. How many flowers are there in all?
  28. 28.Ananya has 14 mangoes and gets 5 mangoes more. How many mangoes does Ananya have now?
  29. 29.Sneha has 13 flowers and gets 7 flowers more. How many flowers does Sneha have now?
  30. 30.? + 9 = 15
  31. 31.Pooja has 10 books and gets 10 books more. How many books does Pooja have now?
  32. 32.15 + ? = 17
  33. 33.Gurpreet has 11 crayons and gets 8 crayons more. How many crayons does Gurpreet have now?
  34. 34.3 + 8 =
  35. 35.4 + 6 + 9 =
  36. 36.3 + 6 + 3 =
  37. 37.Farhan has 2 kites and gets 4 kites more. How many kites does Farhan have now?
  38. 38.8 + 10 =
  39. 39.There are 7 green balloons and 7 red balloons. How many balloons are there in all?
  40. 40.4 + ? = 5

Answer key

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

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