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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 124 · 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.Ananya has 9 balls and gets 3 balls more. How many balls does Ananya have now?
  2. 2.? + 10 = 20
  3. 3.Joseph has 3 mangoes and gets 11 mangoes more. How many mangoes does Joseph have now?
  4. 4.? + 13 = 15
  5. 5.There are 4 yellow beads and 11 white beads. How many beads are there in all?
  6. 6.Tara has 13 flowers and gets 7 flowers more. How many flowers does Tara have now?
  7. 7.? + 3 = 11
  8. 8.4 + 4 =
  9. 9.3 + ? = 4
  10. 10.There are 8 green flowers and 2 yellow flowers. How many flowers are there in all?
  11. 11.Karan has 4 flowers and gets 5 flowers more. How many flowers does Karan have now?
  12. 12.Joseph has 15 bananas and gets 2 bananas more. How many bananas does Joseph have now?
  13. 13.There are 3 blue flowers and 9 pink flowers. How many flowers are there in all?
  14. 14.? + 10 = 14
  15. 15.7 + 7 + 2 =
  16. 16.There are 6 blue balloons and 5 white balloons. How many balloons are there in all?
  17. 17.8 + 11 =
  18. 18.12 + 8 =
  19. 19.Farhan has 7 flowers and gets 6 flowers more. How many flowers does Farhan have now?
  20. 20.1 + 4 + 5 =
  21. 21.1 + 14 =
  22. 22.? + 10 = 18
  23. 23.9 + 2 =
  24. 24.14 + 6 =
  25. 25.There are 2 blue balloons and 3 green balloons. How many balloons are there in all?
  26. 26.There are 4 pink balloons and 10 white balloons. How many balloons are there in all?
  27. 27.? + 3 = 6
  28. 28.6 + 6 + 5 =
  29. 29.1 + 2 + 17 =
  30. 30.2 + 10 =
  31. 31.6 + 7 + 1 =
  32. 32.7 + 1 + 6 =
  33. 33.1 + 5 + 3 =
  34. 34.2 + ? = 8
  35. 35.Joseph has 2 pencils and gets 10 pencils more. How many pencils does Joseph have now?
  36. 36.5 + 8 + 6 =
  37. 37.5 + 2 + 3 =
  38. 38.Lakshmi has 2 bananas and gets 5 bananas more. How many bananas does Lakshmi have now?
  39. 39.There are 2 blue balloons and 4 green balloons. How many balloons are there in all?
  40. 40.? + 2 = 5

Answer key

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

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