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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 594 · 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 + 5 =
  2. 2.3 + 2 + 6 =
  3. 3.9 + ? = 16
  4. 4.10 + 4 =
  5. 5.5 + 12 =
  6. 6.10 + ? = 14
  7. 7.19 + 1 =
  8. 8.There are 2 green flowers and 10 white flowers. How many flowers are there in all?
  9. 9.5 + 8 + 2 =
  10. 10.14 + 1 =
  11. 11.6 + 11 =
  12. 12.Kavya has 10 marbles and gets 7 marbles more. How many marbles does Kavya have now?
  13. 13.1 + 8 + 9 =
  14. 14.There are 4 red kites and 2 white kites. How many kites are there in all?
  15. 15.There are 2 white kites and 11 blue kites. How many kites are there in all?
  16. 16.8 + 2 + 1 =
  17. 17.Meera has 9 balls and gets 1 ball more. How many balls does Meera have now?
  18. 18.There are 3 pink flowers and 8 blue flowers. How many flowers are there in all?
  19. 19.2 + 8 + 1 =
  20. 20.There are 7 green flowers and 11 yellow flowers. How many flowers are there in all?
  21. 21.1 + ? = 3
  22. 22.Karan has 14 pencils and gets 2 pencils more. How many pencils does Karan have now?
  23. 23.11 + 6 =
  24. 24.6 + 4 + 3 =
  25. 25.Tara has 4 bananas and gets 14 bananas more. How many bananas does Tara have now?
  26. 26.11 + 1 =
  27. 27.7 + 1 + 12 =
  28. 28.Priya has 9 marbles and gets 6 marbles more. How many marbles does Priya have now?
  29. 29.? + 4 = 7
  30. 30.12 + 2 =
  31. 31.2 + 1 + 8 =
  32. 32.Aarav has 7 pencils and gets 12 pencils more. How many pencils does Aarav have now?
  33. 33.Gurpreet has 5 books and gets 11 books more. How many books does Gurpreet have now?
  34. 34.? + 5 = 6
  35. 35.There are 7 pink flowers and 8 yellow flowers. How many flowers are there in all?
  36. 36.Sneha has 7 balls and gets 4 balls more. How many balls does Sneha have now?
  37. 37.Diya has 6 shells and gets 11 shells more. How many shells does Diya have now?
  38. 38.6 + 7 + 3 =
  39. 39.Karan has 5 marbles and gets 15 marbles more. How many marbles does Karan have now?
  40. 40.There are 7 green kites and 8 pink kites. How many kites are there in all?

Answer key

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

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