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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 665 · 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 6 blue flowers and 7 red flowers. How many flowers are there in all?
  2. 2.2 + 3 + 10 =
  3. 3.Aditya has 11 mangoes and gets 7 mangoes more. How many mangoes does Aditya have now?
  4. 4.8 + 8 + 4 =
  5. 5.Arjun has 12 bananas and gets 6 bananas more. How many bananas does Arjun have now?
  6. 6.Aditya has 14 bananas and gets 1 banana more. How many bananas does Aditya have now?
  7. 7.Kavya has 3 balls and gets 15 balls more. How many balls does Kavya have now?
  8. 8.1 + 12 =
  9. 9.4 + 8 =
  10. 10.3 + 17 =
  11. 11.? + 13 = 14
  12. 12.3 + ? = 14
  13. 13.There are 8 red balls and 4 green balls. How many balls are there in all?
  14. 14.Diya has 14 marbles and gets 4 marbles more. How many marbles does Diya have now?
  15. 15.Arjun has 12 kites and gets 2 kites more. How many kites does Arjun have now?
  16. 16.Riya has 15 balls and gets 2 balls more. How many balls does Riya have now?
  17. 17.There are 7 blue flowers and 12 green flowers. How many flowers are there in all?
  18. 18.Joseph has 7 mangoes and gets 12 mangoes more. How many mangoes does Joseph have now?
  19. 19.Kabir has 9 kites and gets 7 kites more. How many kites does Kabir have now?
  20. 20.? + 3 = 20
  21. 21.There are 4 red beads and 7 white beads. How many beads are there in all?
  22. 22.1 + 2 + 3 =
  23. 23.Joseph has 13 pencils and gets 3 pencils more. How many pencils does Joseph have now?
  24. 24.2 + 6 + 2 =
  25. 25.Priya has 5 laddoos and gets 3 laddoos more. How many laddoos does Priya have now?
  26. 26.17 + 2 =
  27. 27.3 + 5 + 10 =
  28. 28.2 + 4 + 11 =
  29. 29.There are 2 white balloons and 2 yellow balloons. How many balloons are there in all?
  30. 30.2 + 3 + 1 =
  31. 31.6 + 8 + 6 =
  32. 32.8 + 2 + 6 =
  33. 33.3 + ? = 5
  34. 34.? + 2 = 5
  35. 35.There are 9 white flowers and 5 blue flowers. How many flowers are there in all?
  36. 36.There are 12 red balls and 6 white balls. How many balls are there in all?
  37. 37.6 + ? = 15
  38. 38.11 + 5 =
  39. 39.There are 11 green beads and 4 yellow beads. How many beads are there in all?
  40. 40.6 + 6 + 1 =

Answer key

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

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