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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 107 · 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. 1.5 + 5 + 1 =
  2. 2.2 + 2 + 3 =
  3. 3.7 + ? = 10
  4. 4.19 + 1 =
  5. 5.Farhan has 4 laddoos and gets 14 laddoos more. How many laddoos does Farhan have now?
  6. 6.There are 2 red balloons and 12 yellow balloons. How many balloons are there in all?
  7. 7.2 + 5 =
  8. 8.3 + ? = 11
  9. 9.Riya has 2 books and gets 16 books more. How many books does Riya have now?
  10. 10.8 + 8 + 3 =
  11. 11.7 + 2 + 3 =
  12. 12.Joseph has 10 mangoes and gets 4 mangoes more. How many mangoes does Joseph have now?
  13. 13.6 + 2 + 9 =
  14. 14.8 + 5 + 6 =
  15. 15.2 + 4 + 9 =
  16. 16.Isha has 5 flowers and gets 8 flowers more. How many flowers does Isha have now?
  17. 17.5 + 5 =
  18. 18.7 + 8 + 2 =
  19. 19.Nisha has 7 balloons and gets 13 balloons more. How many balloons does Nisha have now?
  20. 20.4 + 13 =
  21. 21.1 + ? = 5
  22. 22.11 + 8 =
  23. 23.? + 4 = 9
  24. 24.Isha has 5 balls and gets 6 balls more. How many balls does Isha have now?
  25. 25.Nisha has 12 kites and gets 1 kite more. How many kites does Nisha have now?
  26. 26.Manav has 11 marbles and gets 8 marbles more. How many marbles does Manav have now?
  27. 27.14 + 1 =
  28. 28.Gurpreet has 2 shells and gets 13 shells more. How many shells does Gurpreet have now?
  29. 29.There are 2 yellow crayons and 17 blue crayons. How many crayons are there in all?
  30. 30.Ananya has 5 pencils and gets 11 pencils more. How many pencils does Ananya have now?
  31. 31.Isha has 4 flowers and gets 7 flowers more. How many flowers does Isha have now?
  32. 32.4 + 4 + 7 =
  33. 33.Arjun has 14 balloons and gets 5 balloons more. How many balloons does Arjun have now?
  34. 34.? + 9 = 16
  35. 35.? + 2 = 6
  36. 36.5 + 1 + 3 =
  37. 37.6 + 8 =
  38. 38.7 + 1 + 6 =
  39. 39.Meera has 13 pencils and gets 4 pencils more. How many pencils does Meera have now?
  40. 40.? + 7 = 20

Answer key

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

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