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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 340 · 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. 1.1 + 8 =
  2. 2.There are 2 white balloons and 2 red balloons. How many balloons are there in all?
  3. 3.There are 2 green flowers and 8 red flowers. How many flowers are there in all?
  4. 4.6 + 4 + 1 =
  5. 5.19 + 1 =
  6. 6.9 + ? = 18
  7. 7.Manav has 14 balls and gets 4 balls more. How many balls does Manav have now?
  8. 8.Gurpreet has 15 books and gets 3 books more. How many books does Gurpreet have now?
  9. 9.14 + 2 =
  10. 10.? + 3 = 4
  11. 11.8 + 1 =
  12. 12.Diya has 5 kites and gets 7 kites more. How many kites does Diya have now?
  13. 13.Diya has 3 books and gets 12 books more. How many books does Diya have now?
  14. 14.12 + 8 =
  15. 15.10 + 3 =
  16. 16.5 + 6 + 5 =
  17. 17.5 + 1 + 6 =
  18. 18.9 + 7 =
  19. 19.15 + 3 =
  20. 20.9 + 4 =
  21. 21.6 + 5 + 2 =
  22. 22.8 + 4 + 2 =
  23. 23.? + 2 = 4
  24. 24.There are 10 pink crayons and 2 white crayons. How many crayons are there in all?
  25. 25.1 + 2 + 4 =
  26. 26.There are 7 white kites and 9 yellow kites. How many kites are there in all?
  27. 27.4 + 3 + 5 =
  28. 28.There are 10 yellow balls and 9 pink balls. How many balls are there in all?
  29. 29.10 + ? = 18
  30. 30.3 + 4 =
  31. 31.Aarav has 2 shells and gets 7 shells more. How many shells does Aarav have now?
  32. 32.6 + 3 + 5 =
  33. 33.Aditya has 3 mangoes and gets 11 mangoes more. How many mangoes does Aditya have now?
  34. 34.7 + 3 + 10 =
  35. 35.12 + 5 =
  36. 36.14 + 1 =
  37. 37.Rahul has 7 balloons and gets 8 balloons more. How many balloons does Rahul have now?
  38. 38.Diya has 5 mangoes and gets 5 mangoes more. How many mangoes does Diya have now?
  39. 39.8 + 2 + 9 =
  40. 40.6 + 3 + 8 =

Answer key

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

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