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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 669 · 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 8 pink crayons and 9 yellow crayons. How many crayons are there in all?
  2. 2.3 + 1 + 4 =
  3. 3.Arjun has 15 shells and gets 4 shells more. How many shells does Arjun have now?
  4. 4.12 + 2 =
  5. 5.8 + 10 =
  6. 6.? + 6 = 19
  7. 7.There are 8 red crayons and 8 yellow crayons. How many crayons are there in all?
  8. 8.Tara has 5 balls and gets 12 balls more. How many balls does Tara have now?
  9. 9.Nisha has 3 crayons and gets 4 crayons more. How many crayons does Nisha have now?
  10. 10.Aditya has 2 shells and gets 1 shell more. How many shells does Aditya have now?
  11. 11.17 + 3 =
  12. 12.Gurpreet has 8 pencils and gets 11 pencils more. How many pencils does Gurpreet have now?
  13. 13.There are 4 red flowers and 4 blue flowers. How many flowers are there in all?
  14. 14.Aarav has 3 pencils and gets 17 pencils more. How many pencils does Aarav have now?
  15. 15.11 + 4 =
  16. 16.18 + 1 =
  17. 17.? + 13 = 16
  18. 18.19 + 1 =
  19. 19.6 + 10 =
  20. 20.Lakshmi has 5 mangoes and gets 11 mangoes more. How many mangoes does Lakshmi have now?
  21. 21.Vivaan has 10 books and gets 4 books more. How many books does Vivaan have now?
  22. 22.5 + ? = 7
  23. 23.3 + 7 + 10 =
  24. 24.? + 4 = 16
  25. 25.11 + 7 =
  26. 26.7 + 8 =
  27. 27.There are 5 pink beads and 2 white beads. How many beads are there in all?
  28. 28.There are 11 pink flowers and 7 green flowers. How many flowers are there in all?
  29. 29.3 + 3 + 7 =
  30. 30.12 + 1 =
  31. 31.? + 5 = 13
  32. 32.2 + ? = 3
  33. 33.Lakshmi has 14 mangoes and gets 5 mangoes more. How many mangoes does Lakshmi have now?
  34. 34.8 + 5 + 5 =
  35. 35.There are 8 yellow balls and 8 blue balls. How many balls are there in all?
  36. 36.4 + ? = 11
  37. 37.5 + 4 + 2 =
  38. 38.5 + 5 + 5 =
  39. 39.There are 4 green flowers and 7 yellow flowers. How many flowers are there in all?
  40. 40.Arjun has 8 crayons and gets 4 crayons more. How many crayons does Arjun have now?

Answer key

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

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