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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 794 · 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.Isha has 14 laddoos and gets 5 laddoos more. How many laddoos does Isha have now?
  2. 2.18 + ? = 19
  3. 3.Vivaan has 11 mangoes and gets 5 mangoes more. How many mangoes does Vivaan have now?
  4. 4.18 + 2 =
  5. 5.? + 2 = 8
  6. 6.1 + 4 + 5 =
  7. 7.Farhan has 3 flowers and gets 2 flowers more. How many flowers does Farhan have now?
  8. 8.3 + 5 + 5 =
  9. 9.1 + ? = 20
  10. 10.8 + 4 =
  11. 11.There are 8 pink flowers and 12 green flowers. How many flowers are there in all?
  12. 12.1 + ? = 9
  13. 13.1 + 7 + 10 =
  14. 14.10 + 1 =
  15. 15.3 + 8 + 5 =
  16. 16.14 + 4 =
  17. 17.7 + ? = 10
  18. 18.Nisha has 2 bananas and gets 2 bananas more. How many bananas does Nisha have now?
  19. 19.6 + 6 + 3 =
  20. 20.3 + ? = 5
  21. 21.Manav has 6 bananas and gets 10 bananas more. How many bananas does Manav have now?
  22. 22.16 + 2 =
  23. 23.6 + 6 + 2 =
  24. 24.There are 11 green balls and 4 blue balls. How many balls are there in all?
  25. 25.2 + 1 =
  26. 26.7 + 6 =
  27. 27.1 + ? = 5
  28. 28.There are 9 blue balls and 6 yellow balls. How many balls are there in all?
  29. 29.There are 3 red flowers and 12 white flowers. How many flowers are there in all?
  30. 30.There are 12 green kites and 6 white kites. How many kites are there in all?
  31. 31.1 + ? = 11
  32. 32.There are 5 white flowers and 7 green flowers. How many flowers are there in all?
  33. 33.2 + 6 + 3 =
  34. 34.? + 4 = 17
  35. 35.? + 9 = 18
  36. 36.3 + ? = 11
  37. 37.3 + 1 + 15 =
  38. 38.5 + 3 + 4 =
  39. 39.15 + 3 =
  40. 40.? + 7 = 12

Answer key

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

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