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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 424 · 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. 1.3 + 2 + 8 =
  2. 2.Manav has 3 balls and gets 11 balls more. How many balls does Manav have now?
  3. 3.6 + 7 + 1 =
  4. 4.8 + ? = 14
  5. 5.14 + 5 =
  6. 6.There are 5 yellow balloons and 11 white balloons. How many balloons are there in all?
  7. 7.9 + ? = 18
  8. 8.6 + ? = 16
  9. 9.14 + 4 =
  10. 10.3 + 2 + 12 =
  11. 11.3 + 2 =
  12. 12.Gurpreet has 12 bananas and gets 8 bananas more. How many bananas does Gurpreet have now?
  13. 13.Kavya has 15 balloons and gets 4 balloons more. How many balloons does Kavya have now?
  14. 14.2 + 7 + 2 =
  15. 15.1 + ? = 17
  16. 16.4 + 6 =
  17. 17.6 + 1 + 3 =
  18. 18.Nisha has 14 mangoes and gets 3 mangoes more. How many mangoes does Nisha have now?
  19. 19.1 + 2 + 14 =
  20. 20.1 + 7 + 8 =
  21. 21.2 + 5 =
  22. 22.5 + 12 =
  23. 23.2 + 5 + 12 =
  24. 24.1 + 1 + 1 =
  25. 25.19 + 1 =
  26. 26.There are 11 blue flowers and 6 green flowers. How many flowers are there in all?
  27. 27.10 + 5 =
  28. 28.There are 5 red crayons and 5 white crayons. How many crayons are there in all?
  29. 29.2 + ? = 4
  30. 30.Tara has 6 pencils and gets 1 pencil more. How many pencils does Tara have now?
  31. 31.Diya has 9 bananas and gets 9 bananas more. How many bananas does Diya have now?
  32. 32.Karan has 2 bananas and gets 2 bananas more. How many bananas does Karan have now?
  33. 33.5 + 6 + 1 =
  34. 34.There are 5 red balls and 6 white balls. How many balls are there in all?
  35. 35.Tara has 14 flowers and gets 6 flowers more. How many flowers does Tara have now?
  36. 36.3 + 4 =
  37. 37.14 + 6 =
  38. 38.3 + 14 =
  39. 39.There are 3 blue beads and 8 white beads. How many beads are there in all?
  40. 40.4 + ? = 11

Answer key

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

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