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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 591 · 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 + 1 + 8 =
  2. 2.Diya has 6 shells and gets 3 shells more. How many shells does Diya have now?
  3. 3.There are 3 white crayons and 6 pink crayons. How many crayons are there in all?
  4. 4.7 + 11 =
  5. 5.8 + 4 + 8 =
  6. 6.Diya has 2 crayons and gets 13 crayons more. How many crayons does Diya have now?
  7. 7.8 + ? = 10
  8. 8.6 + 4 =
  9. 9.There are 7 white flowers and 13 green flowers. How many flowers are there in all?
  10. 10.1 + 2 + 12 =
  11. 11.9 + ? = 10
  12. 12.Tara has 4 kites and gets 12 kites more. How many kites does Tara have now?
  13. 13.? + 8 = 18
  14. 14.3 + 2 =
  15. 15.Ishaan has 7 balls and gets 13 balls more. How many balls does Ishaan have now?
  16. 16.2 + ? = 19
  17. 17.7 + 5 + 8 =
  18. 18.There are 9 blue flowers and 7 green flowers. How many flowers are there in all?
  19. 19.There are 2 red crayons and 10 blue crayons. How many crayons are there in all?
  20. 20.2 + 4 + 12 =
  21. 21.Arjun has 5 mangoes and gets 5 mangoes more. How many mangoes does Arjun have now?
  22. 22.1 + 2 =
  23. 23.6 + 12 =
  24. 24.5 + 5 =
  25. 25.There are 2 yellow balls and 7 blue balls. How many balls are there in all?
  26. 26.Kabir has 8 mangoes and gets 7 mangoes more. How many mangoes does Kabir have now?
  27. 27.5 + ? = 18
  28. 28.16 + 2 =
  29. 29.5 + 1 =
  30. 30.Ananya has 13 pencils and gets 5 pencils more. How many pencils does Ananya have now?
  31. 31.Meera has 7 pencils and gets 7 pencils more. How many pencils does Meera have now?
  32. 32.8 + 2 + 8 =
  33. 33.1 + 7 + 12 =
  34. 34.4 + 2 + 2 =
  35. 35.There are 6 yellow beads and 7 pink beads. How many beads are there in all?
  36. 36.1 + 3 + 8 =
  37. 37.Arjun has 10 balls and gets 2 balls more. How many balls does Arjun have now?
  38. 38.There are 4 blue balloons and 5 green balloons. How many balloons are there in all?
  39. 39.There are 6 green crayons and 10 white crayons. How many crayons are there in all?
  40. 40.2 + 7 + 3 =

Answer key

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

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