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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 830 · 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.There are 12 blue kites and 7 green kites. How many kites are there in all?
  2. 2.2 + 2 + 1 =
  3. 3.Aditya has 12 shells and gets 2 shells more. How many shells does Aditya have now?
  4. 4.Isha has 6 balls and gets 12 balls more. How many balls does Isha have now?
  5. 5.There are 6 yellow kites and 3 red kites. How many kites are there in all?
  6. 6.8 + 4 + 3 =
  7. 7.? + 1 = 8
  8. 8.There are 10 blue balloons and 4 red balloons. How many balloons are there in all?
  9. 9.There are 4 white flowers and 13 red flowers. How many flowers are there in all?
  10. 10.2 + ? = 5
  11. 11.2 + ? = 10
  12. 12.15 + ? = 19
  13. 13.? + 4 = 18
  14. 14.There are 3 green kites and 11 red kites. How many kites are there in all?
  15. 15.8 + 5 + 2 =
  16. 16.3 + 5 + 12 =
  17. 17.3 + 1 + 3 =
  18. 18.2 + 2 + 2 =
  19. 19.4 + 1 + 9 =
  20. 20.7 + 12 =
  21. 21.4 + 11 =
  22. 22.8 + 8 =
  23. 23.There are 2 white balloons and 17 green balloons. How many balloons are there in all?
  24. 24.There are 3 white balls and 6 red balls. How many balls are there in all?
  25. 25.1 + 6 =
  26. 26.1 + ? = 4
  27. 27.Diya has 10 mangoes and gets 1 mango more. How many mangoes does Diya have now?
  28. 28.5 + 1 + 2 =
  29. 29.17 + 2 =
  30. 30.Kavya has 6 flowers and gets 1 flower more. How many flowers does Kavya have now?
  31. 31.1 + 7 + 3 =
  32. 32.There are 4 red balls and 3 green balls. How many balls are there in all?
  33. 33.? + 12 = 13
  34. 34.Isha has 2 laddoos and gets 1 laddoo more. How many laddoos does Isha have now?
  35. 35.8 + 3 =
  36. 36.Zoya has 7 bananas and gets 6 bananas more. How many bananas does Zoya have now?
  37. 37.16 + 2 =
  38. 38.2 + 1 + 9 =
  39. 39.Ananya has 3 balls and gets 2 balls more. How many balls does Ananya have now?
  40. 40.4 + 12 =

Answer key

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

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