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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 868 · 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. 1.4 + 2 + 5 =
  2. 2.Vivaan has 11 flowers and gets 8 flowers more. How many flowers does Vivaan have now?
  3. 3.There are 2 red balls and 8 green balls. How many balls are there in all?
  4. 4.Kabir has 13 bananas and gets 4 bananas more. How many bananas does Kabir have now?
  5. 5.10 + 7 =
  6. 6.2 + 4 + 14 =
  7. 7.Meera has 5 shells and gets 7 shells more. How many shells does Meera have now?
  8. 8.15 + 4 =
  9. 9.? + 5 = 8
  10. 10.5 + 4 =
  11. 11.Vivaan has 5 crayons and gets 13 crayons more. How many crayons does Vivaan have now?
  12. 12.7 + 2 =
  13. 13.Dev has 14 balls and gets 4 balls more. How many balls does Dev have now?
  14. 14.Aditya has 12 shells and gets 4 shells more. How many shells does Aditya have now?
  15. 15.3 + 4 + 5 =
  16. 16.5 + 3 =
  17. 17.There are 2 white crayons and 18 blue crayons. How many crayons are there in all?
  18. 18.9 + 10 =
  19. 19.18 + 1 =
  20. 20.1 + 7 + 7 =
  21. 21.Pooja has 9 balls and gets 4 balls more. How many balls does Pooja have now?
  22. 22.Ananya has 10 marbles and gets 4 marbles more. How many marbles does Ananya have now?
  23. 23.Priya has 5 marbles and gets 13 marbles more. How many marbles does Priya have now?
  24. 24.Farhan has 5 mangoes and gets 10 mangoes more. How many mangoes does Farhan have now?
  25. 25.15 + 5 =
  26. 26.Kavya has 12 balls and gets 8 balls more. How many balls does Kavya have now?
  27. 27.? + 1 = 4
  28. 28.There are 12 pink crayons and 2 white crayons. How many crayons are there in all?
  29. 29.There are 5 green balloons and 7 white balloons. How many balloons are there in all?
  30. 30.7 + 6 + 6 =
  31. 31.2 + ? = 3
  32. 32.2 + ? = 6
  33. 33.Ishaan has 7 bananas and gets 1 banana more. How many bananas does Ishaan have now?
  34. 34.3 + 5 + 6 =
  35. 35.5 + 5 + 8 =
  36. 36.2 + 7 + 3 =
  37. 37.There are 2 white balls and 3 green balls. How many balls are there in all?
  38. 38.2 + 15 =
  39. 39.2 + 6 + 8 =
  40. 40.8 + 1 + 7 =

Answer key

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

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