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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 860 · 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. 1.7 + 4 + 7 =
  2. 2.Priya has 11 balloons and gets 5 balloons more. How many balloons does Priya have now?
  3. 3.5 + 5 + 6 =
  4. 4.8 + ? = 14
  5. 5.? + 1 = 7
  6. 6.There are 9 white kites and 9 red kites. How many kites are there in all?
  7. 7.Lakshmi has 10 books and gets 10 books more. How many books does Lakshmi have now?
  8. 8.Ananya has 2 marbles and gets 15 marbles more. How many marbles does Ananya have now?
  9. 9.1 + 8 + 7 =
  10. 10.4 + 2 + 2 =
  11. 11.Karan has 7 crayons and gets 11 crayons more. How many crayons does Karan have now?
  12. 12.2 + ? = 11
  13. 13.Vivaan has 10 pencils and gets 4 pencils more. How many pencils does Vivaan have now?
  14. 14.There are 5 blue crayons and 5 red crayons. How many crayons are there in all?
  15. 15.14 + 3 =
  16. 16.? + 17 = 18
  17. 17.Diya has 11 bananas and gets 3 bananas more. How many bananas does Diya have now?
  18. 18.6 + 4 + 1 =
  19. 19.6 + ? = 10
  20. 20.There are 3 yellow balloons and 4 blue balloons. How many balloons are there in all?
  21. 21.15 + 2 =
  22. 22.7 + 5 + 3 =
  23. 23.Saanvi has 11 marbles and gets 9 marbles more. How many marbles does Saanvi have now?
  24. 24.Aarav has 15 mangoes and gets 2 mangoes more. How many mangoes does Aarav have now?
  25. 25.16 + 4 =
  26. 26.Farhan has 12 mangoes and gets 6 mangoes more. How many mangoes does Farhan have now?
  27. 27.? + 3 = 7
  28. 28.? + 5 = 19
  29. 29.There are 4 yellow flowers and 2 blue flowers. How many flowers are there in all?
  30. 30.Pooja has 4 flowers and gets 13 flowers more. How many flowers does Pooja have now?
  31. 31.Diya has 7 pencils and gets 8 pencils more. How many pencils does Diya have now?
  32. 32.3 + 5 + 3 =
  33. 33.There are 8 white flowers and 7 blue flowers. How many flowers are there in all?
  34. 34.Pooja has 9 kites and gets 3 kites more. How many kites does Pooja have now?
  35. 35.There are 3 white crayons and 14 green crayons. How many crayons are there in all?
  36. 36.1 + ? = 3
  37. 37.5 + ? = 17
  38. 38.2 + 3 + 10 =
  39. 39.? + 1 = 8
  40. 40.3 + 5 + 5 =

Answer key

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

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