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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 908 · 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. 1.2 + 2 + 9 =
  2. 2.There are 9 yellow crayons and 11 blue crayons. How many crayons are there in all?
  3. 3.? + 8 = 11
  4. 4.2 + ? = 4
  5. 5.4 + 1 =
  6. 6.There are 11 white beads and 7 pink beads. How many beads are there in all?
  7. 7.There are 11 white beads and 9 pink beads. How many beads are there in all?
  8. 8.10 + ? = 15
  9. 9.2 + 7 + 2 =
  10. 10.There are 12 green flowers and 7 red flowers. How many flowers are there in all?
  11. 11.11 + 3 =
  12. 12.? + 1 = 8
  13. 13.7 + ? = 10
  14. 14.5 + 13 =
  15. 15.There are 3 yellow balloons and 15 green balloons. How many balloons are there in all?
  16. 16.Priya has 7 mangoes and gets 5 mangoes more. How many mangoes does Priya have now?
  17. 17.9 + 6 =
  18. 18.There are 3 green balls and 15 blue balls. How many balls are there in all?
  19. 19.1 + 5 + 12 =
  20. 20.1 + 12 =
  21. 21.There are 12 green beads and 7 white beads. How many beads are there in all?
  22. 22.12 + 6 =
  23. 23.Ishaan has 13 shells and gets 2 shells more. How many shells does Ishaan have now?
  24. 24.Rahul has 3 shells and gets 12 shells more. How many shells does Rahul have now?
  25. 25.Farhan has 14 books and gets 4 books more. How many books does Farhan have now?
  26. 26.10 + 7 =
  27. 27.10 + 1 =
  28. 28.Ishaan has 13 pencils and gets 6 pencils more. How many pencils does Ishaan have now?
  29. 29.Arjun has 10 flowers and gets 3 flowers more. How many flowers does Arjun have now?
  30. 30.? + 6 = 15
  31. 31.5 + 14 =
  32. 32.2 + 3 + 5 =
  33. 33.2 + 6 + 11 =
  34. 34.Lakshmi has 6 pencils and gets 2 pencils more. How many pencils does Lakshmi have now?
  35. 35.6 + 11 =
  36. 36.There are 4 pink flowers and 2 blue flowers. How many flowers are there in all?
  37. 37.13 + 7 =
  38. 38.16 + ? = 20
  39. 39.6 + 6 =
  40. 40.Vivaan has 8 bananas and gets 8 bananas more. How many bananas does Vivaan have now?

Answer key

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

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