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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 510 · 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.Joseph has 7 crayons and gets 12 crayons more. How many crayons does Joseph have now?
  2. 2.2 + ? = 14
  3. 3.8 + ? = 10
  4. 4.Nisha has 5 crayons and gets 5 crayons more. How many crayons does Nisha have now?
  5. 5.Zoya has 13 mangoes and gets 6 mangoes more. How many mangoes does Zoya have now?
  6. 6.There are 7 white beads and 11 red beads. How many beads are there in all?
  7. 7.Dev has 2 marbles and gets 11 marbles more. How many marbles does Dev have now?
  8. 8.Aditya has 13 flowers and gets 6 flowers more. How many flowers does Aditya have now?
  9. 9.4 + 2 =
  10. 10.9 + 2 =
  11. 11.12 + 4 =
  12. 12.Rohan has 12 flowers and gets 1 flower more. How many flowers does Rohan have now?
  13. 13.6 + 2 + 9 =
  14. 14.There are 3 white kites and 12 red kites. How many kites are there in all?
  15. 15.There are 7 white crayons and 12 green crayons. How many crayons are there in all?
  16. 16.? + 8 = 11
  17. 17.4 + 3 + 2 =
  18. 18.1 + 7 + 4 =
  19. 19.Diya has 3 laddoos and gets 1 laddoo more. How many laddoos does Diya have now?
  20. 20.There are 6 red flowers and 13 white flowers. How many flowers are there in all?
  21. 21.Rahul has 5 bananas and gets 13 bananas more. How many bananas does Rahul have now?
  22. 22.Kavya has 2 shells and gets 4 shells more. How many shells does Kavya have now?
  23. 23.12 + ? = 16
  24. 24.There are 2 red balloons and 11 pink balloons. How many balloons are there in all?
  25. 25.? + 5 = 18
  26. 26.3 + 2 + 12 =
  27. 27.17 + 2 =
  28. 28.1 + 2 + 4 =
  29. 29.Lakshmi has 3 balls and gets 1 ball more. How many balls does Lakshmi have now?
  30. 30.19 + 1 =
  31. 31.There are 2 pink crayons and 7 red crayons. How many crayons are there in all?
  32. 32.There are 5 white balloons and 9 blue balloons. How many balloons are there in all?
  33. 33.2 + 3 + 4 =
  34. 34.There are 9 white crayons and 2 blue crayons. How many crayons are there in all?
  35. 35.3 + 4 + 5 =
  36. 36.Arjun has 9 laddoos and gets 1 laddoo more. How many laddoos does Arjun have now?
  37. 37.There are 3 blue balloons and 14 green balloons. How many balloons are there in all?
  38. 38.7 + 7 + 5 =
  39. 39.There are 12 yellow balls and 3 red balls. How many balls are there in all?
  40. 40.7 + ? = 19

Answer key

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

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