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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 160 · 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 + 1 + 14 =
  2. 2.1 + ? = 6
  3. 3.14 + 5 =
  4. 4.1 + 16 =
  5. 5.? + 8 = 11
  6. 6.? + 3 = 11
  7. 7.Lakshmi has 14 bananas and gets 5 bananas more. How many bananas does Lakshmi have now?
  8. 8.5 + 7 =
  9. 9.6 + 6 + 7 =
  10. 10.There are 12 pink flowers and 4 yellow flowers. How many flowers are there in all?
  11. 11.There are 8 red flowers and 11 pink flowers. How many flowers are there in all?
  12. 12.There are 4 red beads and 5 yellow beads. How many beads are there in all?
  13. 13.8 + 2 =
  14. 14.1 + 6 + 9 =
  15. 15.There are 3 white balloons and 13 pink balloons. How many balloons are there in all?
  16. 16.5 + 3 + 8 =
  17. 17.There are 2 blue flowers and 15 pink flowers. How many flowers are there in all?
  18. 18.15 + 4 =
  19. 19.1 + ? = 11
  20. 20.2 + ? = 5
  21. 21.13 + 7 =
  22. 22.1 + ? = 5
  23. 23.Manav has 8 flowers and gets 6 flowers more. How many flowers does Manav have now?
  24. 24.8 + 5 + 2 =
  25. 25.Ananya has 4 bananas and gets 6 bananas more. How many bananas does Ananya have now?
  26. 26.2 + 2 =
  27. 27.7 + 1 =
  28. 28.1 + ? = 3
  29. 29.There are 10 white balls and 7 pink balls. How many balls are there in all?
  30. 30.Sneha has 6 balls and gets 3 balls more. How many balls does Sneha have now?
  31. 31.7 + 8 =
  32. 32.? + 11 = 18
  33. 33.There are 4 blue balloons and 3 green balloons. How many balloons are there in all?
  34. 34.Tara has 2 mangoes and gets 13 mangoes more. How many mangoes does Tara have now?
  35. 35.? + 6 = 10
  36. 36.13 + 6 =
  37. 37.6 + 2 =
  38. 38.There are 2 red kites and 9 white kites. How many kites are there in all?
  39. 39.12 + 5 =
  40. 40.2 + ? = 14

Answer key

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

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