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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 204 · 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. 1.2 + 8 =
  2. 2.14 + 1 =
  3. 3.6 + 2 =
  4. 4.? + 1 = 19
  5. 5.Meera has 4 balls and gets 16 balls more. How many balls does Meera have now?
  6. 6.? + 10 = 18
  7. 7.2 + 17 =
  8. 8.Arjun has 9 marbles and gets 3 marbles more. How many marbles does Arjun have now?
  9. 9.13 + 1 =
  10. 10.14 + 3 =
  11. 11.4 + 1 + 8 =
  12. 12.Arjun has 11 mangoes and gets 6 mangoes more. How many mangoes does Arjun have now?
  13. 13.16 + ? = 20
  14. 14.5 + 2 + 1 =
  15. 15.9 + 10 =
  16. 16.8 + 5 + 2 =
  17. 17.Rahul has 6 pencils and gets 8 pencils more. How many pencils does Rahul have now?
  18. 18.There are 11 blue balloons and 3 pink balloons. How many balloons are there in all?
  19. 19.6 + 8 =
  20. 20.19 + 1 =
  21. 21.There are 7 yellow balloons and 8 blue balloons. How many balloons are there in all?
  22. 22.3 + 6 + 8 =
  23. 23.2 + 14 =
  24. 24.There are 11 red kites and 6 yellow kites. How many kites are there in all?
  25. 25.There are 5 pink kites and 7 red kites. How many kites are there in all?
  26. 26.There are 3 red flowers and 2 white flowers. How many flowers are there in all?
  27. 27.2 + ? = 12
  28. 28.2 + 8 + 10 =
  29. 29.5 + 2 + 10 =
  30. 30.Gurpreet has 2 bananas and gets 7 bananas more. How many bananas does Gurpreet have now?
  31. 31.12 + 2 =
  32. 32.? + 9 = 11
  33. 33.Aditya has 8 flowers and gets 1 flower more. How many flowers does Aditya have now?
  34. 34.Karan has 6 books and gets 6 books more. How many books does Karan have now?
  35. 35.3 + 2 =
  36. 36.There are 3 green beads and 12 yellow beads. How many beads are there in all?
  37. 37.Tara has 7 pencils and gets 8 pencils more. How many pencils does Tara have now?
  38. 38.2 + 3 =
  39. 39.7 + 8 + 2 =
  40. 40.? + 10 = 15

Answer key

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

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