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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 470 · 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. 1.11 + 4 =
  2. 2.1 + 4 =
  3. 3.3 + ? = 15
  4. 4.? + 8 = 13
  5. 5.11 + 5 =
  6. 6.Aditya has 10 marbles and gets 8 marbles more. How many marbles does Aditya have now?
  7. 7.There are 12 green kites and 3 pink kites. How many kites are there in all?
  8. 8.9 + 5 =
  9. 9.? + 1 = 3
  10. 10.7 + 3 + 1 =
  11. 11.6 + 5 + 1 =
  12. 12.3 + 8 =
  13. 13.Priya has 12 kites and gets 6 kites more. How many kites does Priya have now?
  14. 14.5 + 7 + 1 =
  15. 15.Zoya has 8 balloons and gets 6 balloons more. How many balloons does Zoya have now?
  16. 16.11 + 2 =
  17. 17.Zoya has 7 kites and gets 8 kites more. How many kites does Zoya have now?
  18. 18.1 + 6 + 9 =
  19. 19.12 + 6 =
  20. 20.4 + 1 + 10 =
  21. 21.1 + 4 + 5 =
  22. 22.Sneha has 8 marbles and gets 7 marbles more. How many marbles does Sneha have now?
  23. 23.There are 7 yellow balls and 11 pink balls. How many balls are there in all?
  24. 24.Priya has 7 flowers and gets 1 flower more. How many flowers does Priya have now?
  25. 25.1 + 1 + 6 =
  26. 26.5 + 1 + 10 =
  27. 27.4 + 4 + 1 =
  28. 28.9 + ? = 18
  29. 29.Rahul has 14 marbles and gets 1 marble more. How many marbles does Rahul have now?
  30. 30.There are 4 green balloons and 14 red balloons. How many balloons are there in all?
  31. 31.3 + 3 + 14 =
  32. 32.There are 3 yellow balloons and 4 blue balloons. How many balloons are there in all?
  33. 33.Sneha has 7 shells and gets 8 shells more. How many shells does Sneha have now?
  34. 34.5 + ? = 15
  35. 35.? + 3 = 4
  36. 36.1 + 19 =
  37. 37.Manav has 6 balloons and gets 4 balloons more. How many balloons does Manav have now?
  38. 38.6 + 10 =
  39. 39.Meera has 11 books and gets 2 books more. How many books does Meera have now?
  40. 40.3 + ? = 7

Answer key

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

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