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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 185 · 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 + 2 =
  2. 2.5 + 12 =
  3. 3.13 + 6 =
  4. 4.17 + 2 =
  5. 5.2 + 7 + 1 =
  6. 6.? + 3 = 4
  7. 7.There are 5 white beads and 4 yellow beads. How many beads are there in all?
  8. 8.13 + 3 =
  9. 9.There are 7 red balloons and 3 white balloons. How many balloons are there in all?
  10. 10.2 + 2 + 11 =
  11. 11.16 + 2 =
  12. 12.1 + 3 + 4 =
  13. 13.17 + 1 =
  14. 14.14 + 4 =
  15. 15.? + 13 = 14
  16. 16.7 + 1 + 3 =
  17. 17.Rahul has 7 marbles and gets 2 marbles more. How many marbles does Rahul have now?
  18. 18.Lakshmi has 8 books and gets 11 books more. How many books does Lakshmi have now?
  19. 19.? + 18 = 20
  20. 20.1 + 3 + 12 =
  21. 21.? + 12 = 18
  22. 22.There are 7 green balloons and 3 pink balloons. How many balloons are there in all?
  23. 23.6 + 3 + 11 =
  24. 24.Riya has 4 mangoes and gets 6 mangoes more. How many mangoes does Riya have now?
  25. 25.16 + 4 =
  26. 26.6 + ? = 14
  27. 27.Arjun has 9 crayons and gets 10 crayons more. How many crayons does Arjun have now?
  28. 28.Aarav has 6 laddoos and gets 12 laddoos more. How many laddoos does Aarav have now?
  29. 29.11 + ? = 18
  30. 30.There are 12 blue balloons and 6 yellow balloons. How many balloons are there in all?
  31. 31.1 + 19 =
  32. 32.There are 7 yellow flowers and 12 green flowers. How many flowers are there in all?
  33. 33.1 + 5 =
  34. 34.Diya has 11 mangoes and gets 5 mangoes more. How many mangoes does Diya have now?
  35. 35.Kavya has 2 balls and gets 1 ball more. How many balls does Kavya have now?
  36. 36.18 + 1 =
  37. 37.1 + 5 + 1 =
  38. 38.Saanvi has 9 marbles and gets 3 marbles more. How many marbles does Saanvi have now?
  39. 39.There are 8 blue kites and 3 yellow kites. How many kites are there in all?
  40. 40.There are 7 green flowers and 9 blue flowers. How many flowers are there in all?

Answer key

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

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