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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 208 · 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. 1.8 + 3 + 3 =
  2. 2.3 + 2 =
  3. 3.Farhan has 3 bananas and gets 17 bananas more. How many bananas does Farhan have now?
  4. 4.Aarav has 6 mangoes and gets 13 mangoes more. How many mangoes does Aarav have now?
  5. 5.? + 2 = 9
  6. 6.4 + 7 + 8 =
  7. 7.Dev has 6 pencils and gets 14 pencils more. How many pencils does Dev have now?
  8. 8.There are 7 pink balls and 4 red balls. How many balls are there in all?
  9. 9.? + 15 = 20
  10. 10.There are 5 pink balloons and 12 blue balloons. How many balloons are there in all?
  11. 11.2 + 6 + 5 =
  12. 12.6 + ? = 18
  13. 13.5 + 6 =
  14. 14.There are 3 yellow beads and 10 pink beads. How many beads are there in all?
  15. 15.3 + 7 =
  16. 16.1 + 3 + 16 =
  17. 17.4 + ? = 6
  18. 18.2 + ? = 5
  19. 19.? + 3 = 8
  20. 20.5 + 5 + 3 =
  21. 21.There are 5 red beads and 4 yellow beads. How many beads are there in all?
  22. 22.There are 5 white balloons and 9 red balloons. How many balloons are there in all?
  23. 23.There are 2 yellow balls and 18 white balls. How many balls are there in all?
  24. 24.3 + ? = 5
  25. 25.4 + 10 =
  26. 26.3 + 17 =
  27. 27.5 + ? = 11
  28. 28.There are 8 white balloons and 4 yellow balloons. How many balloons are there in all?
  29. 29.There are 10 blue flowers and 3 red flowers. How many flowers are there in all?
  30. 30.Dev has 8 flowers and gets 11 flowers more. How many flowers does Dev have now?
  31. 31.There are 7 red beads and 9 blue beads. How many beads are there in all?
  32. 32.? + 3 = 11
  33. 33.2 + 6 =
  34. 34.Meera has 10 bananas and gets 10 bananas more. How many bananas does Meera have now?
  35. 35.15 + 4 =
  36. 36.There are 3 yellow balloons and 5 blue balloons. How many balloons are there in all?
  37. 37.18 + 1 =
  38. 38.4 + 3 + 4 =
  39. 39.1 + 5 =
  40. 40.Meera has 13 pencils and gets 2 pencils more. How many pencils does Meera have now?

Answer key

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

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