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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 33 · 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.There are 3 blue crayons and 2 white crayons. How many crayons are there in all?
  2. 2.There are 5 yellow flowers and 8 blue flowers. How many flowers are there in all?
  3. 3.11 + ? = 12
  4. 4.2 + ? = 15
  5. 5.Gurpreet has 15 mangoes and gets 5 mangoes more. How many mangoes does Gurpreet have now?
  6. 6.2 + 7 + 5 =
  7. 7.? + 2 = 5
  8. 8.There are 12 red balls and 7 pink balls. How many balls are there in all?
  9. 9.Priya has 2 laddoos and gets 4 laddoos more. How many laddoos does Priya have now?
  10. 10.1 + 2 + 2 =
  11. 11.Rahul has 8 balls and gets 4 balls more. How many balls does Rahul have now?
  12. 12.1 + 13 =
  13. 13.Isha has 9 laddoos and gets 11 laddoos more. How many laddoos does Isha have now?
  14. 14.Saanvi has 8 mangoes and gets 6 mangoes more. How many mangoes does Saanvi have now?
  15. 15.1 + ? = 6
  16. 16.12 + 8 =
  17. 17.Rohan has 8 balls and gets 11 balls more. How many balls does Rohan have now?
  18. 18.5 + ? = 8
  19. 19.1 + ? = 4
  20. 20.13 + 1 =
  21. 21.Karan has 2 shells and gets 18 shells more. How many shells does Karan have now?
  22. 22.Karan has 9 bananas and gets 10 bananas more. How many bananas does Karan have now?
  23. 23.3 + 11 =
  24. 24.There are 10 green flowers and 5 yellow flowers. How many flowers are there in all?
  25. 25.There are 7 pink flowers and 2 white flowers. How many flowers are there in all?
  26. 26.There are 11 green balloons and 4 red balloons. How many balloons are there in all?
  27. 27.7 + 7 + 3 =
  28. 28.1 + 6 + 5 =
  29. 29.There are 7 blue flowers and 13 red flowers. How many flowers are there in all?
  30. 30.There are 8 red balloons and 5 white balloons. How many balloons are there in all?
  31. 31.4 + 16 =
  32. 32.There are 4 yellow beads and 9 red beads. How many beads are there in all?
  33. 33.2 + 2 + 4 =
  34. 34.1 + 10 =
  35. 35.15 + 4 =
  36. 36.2 + 3 + 14 =
  37. 37.? + 4 = 14
  38. 38.7 + 7 + 1 =
  39. 39.8 + 7 + 5 =
  40. 40.Diya has 12 flowers and gets 7 flowers more. How many flowers does Diya have now?

Answer key

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

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