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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 454 · 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 + 7 + 3 =
  2. 2.Tara has 10 mangoes and gets 5 mangoes more. How many mangoes does Tara have now?
  3. 3.Karan has 5 books and gets 13 books more. How many books does Karan have now?
  4. 4.Gurpreet has 4 bananas and gets 9 bananas more. How many bananas does Gurpreet have now?
  5. 5.There are 10 green balloons and 3 white balloons. How many balloons are there in all?
  6. 6.5 + 3 + 3 =
  7. 7.There are 2 red kites and 4 white kites. How many kites are there in all?
  8. 8.There are 4 yellow beads and 4 white beads. How many beads are there in all?
  9. 9.19 + 1 =
  10. 10.Saanvi has 14 balls and gets 1 ball more. How many balls does Saanvi have now?
  11. 11.2 + 1 + 8 =
  12. 12.1 + 18 =
  13. 13.5 + 2 + 10 =
  14. 14.7 + ? = 16
  15. 15.There are 5 red kites and 3 blue kites. How many kites are there in all?
  16. 16.6 + 6 + 3 =
  17. 17.4 + 6 =
  18. 18.Vivaan has 2 balls and gets 4 balls more. How many balls does Vivaan have now?
  19. 19.1 + 7 + 10 =
  20. 20.6 + 3 =
  21. 21.8 + 2 + 9 =
  22. 22.7 + 6 + 7 =
  23. 23.1 + 7 + 9 =
  24. 24.13 + 2 =
  25. 25.5 + 1 =
  26. 26.11 + 1 =
  27. 27.Aarav has 11 marbles and gets 8 marbles more. How many marbles does Aarav have now?
  28. 28.There are 3 yellow flowers and 7 blue flowers. How many flowers are there in all?
  29. 29.5 + 4 + 2 =
  30. 30.2 + 6 =
  31. 31.4 + 8 + 1 =
  32. 32.4 + 8 + 7 =
  33. 33.1 + 6 + 3 =
  34. 34.There are 4 green balls and 5 red balls. How many balls are there in all?
  35. 35.10 + 4 =
  36. 36.There are 3 red crayons and 4 green crayons. How many crayons are there in all?
  37. 37.There are 3 yellow balloons and 8 green balloons. How many balloons are there in all?
  38. 38.Nisha has 4 shells and gets 3 shells more. How many shells does Nisha have now?
  39. 39.3 + 2 + 14 =
  40. 40.Tara has 9 pencils and gets 1 pencil more. How many pencils does Tara have now?

Answer key

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

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