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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 557 · 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. 1.6 + 5 + 7 =
  2. 2.Aditya has 9 flowers and gets 7 flowers more. How many flowers does Aditya have now?
  3. 3.There are 3 yellow beads and 6 white beads. How many beads are there in all?
  4. 4.3 + 5 =
  5. 5.There are 11 white balloons and 4 yellow balloons. How many balloons are there in all?
  6. 6.8 + 1 + 9 =
  7. 7.2 + 5 + 9 =
  8. 8.16 + 2 =
  9. 9.1 + 4 + 10 =
  10. 10.12 + 7 =
  11. 11.There are 9 yellow kites and 6 blue kites. How many kites are there in all?
  12. 12.9 + 2 =
  13. 13.Arjun has 11 books and gets 8 books more. How many books does Arjun have now?
  14. 14.Saanvi has 12 books and gets 8 books more. How many books does Saanvi have now?
  15. 15.Manav has 14 pencils and gets 1 pencil more. How many pencils does Manav have now?
  16. 16.There are 2 green balloons and 18 yellow balloons. How many balloons are there in all?
  17. 17.1 + 7 + 12 =
  18. 18.Aditya has 4 balloons and gets 6 balloons more. How many balloons does Aditya have now?
  19. 19.? + 6 = 7
  20. 20.? + 8 = 12
  21. 21.8 + 11 =
  22. 22.5 + 4 + 9 =
  23. 23.10 + ? = 17
  24. 24.Dev has 6 balls and gets 13 balls more. How many balls does Dev have now?
  25. 25.There are 10 yellow kites and 3 white kites. How many kites are there in all?
  26. 26.10 + 4 =
  27. 27.Tara has 5 pencils and gets 3 pencils more. How many pencils does Tara have now?
  28. 28.Sneha has 5 marbles and gets 13 marbles more. How many marbles does Sneha have now?
  29. 29.Vivaan has 8 shells and gets 6 shells more. How many shells does Vivaan have now?
  30. 30.Diya has 4 kites and gets 11 kites more. How many kites does Diya have now?
  31. 31.There are 11 red balloons and 7 pink balloons. How many balloons are there in all?
  32. 32.There are 8 pink balloons and 3 yellow balloons. How many balloons are there in all?
  33. 33.There are 4 pink balloons and 12 green balloons. How many balloons are there in all?
  34. 34.1 + 5 =
  35. 35.6 + 3 + 2 =
  36. 36.7 + ? = 8
  37. 37.11 + 2 =
  38. 38.3 + 11 =
  39. 39.5 + 4 + 4 =
  40. 40.7 + ? = 11

Answer key

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

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