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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 683 · 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.Riya has 11 books and gets 7 books more. How many books does Riya have now?
  2. 2.5 + 15 =
  3. 3.16 + 1 =
  4. 4.17 + 3 =
  5. 5.Priya has 12 marbles and gets 8 marbles more. How many marbles does Priya have now?
  6. 6.1 + 7 + 3 =
  7. 7.There are 3 red balloons and 8 white balloons. How many balloons are there in all?
  8. 8.Rahul has 3 kites and gets 2 kites more. How many kites does Rahul have now?
  9. 9.3 + ? = 10
  10. 10.19 + 1 =
  11. 11.Rahul has 14 mangoes and gets 4 mangoes more. How many mangoes does Rahul have now?
  12. 12.5 + 2 + 1 =
  13. 13.4 + ? = 17
  14. 14.4 + ? = 9
  15. 15.? + 3 = 17
  16. 16.3 + 11 =
  17. 17.Rahul has 5 balloons and gets 2 balloons more. How many balloons does Rahul have now?
  18. 18.There are 10 white beads and 6 pink beads. How many beads are there in all?
  19. 19.? + 1 = 7
  20. 20.6 + 4 + 8 =
  21. 21.4 + 1 + 10 =
  22. 22.There are 11 blue flowers and 3 white flowers. How many flowers are there in all?
  23. 23.? + 14 = 18
  24. 24.3 + 8 + 6 =
  25. 25.There are 8 pink balloons and 8 blue balloons. How many balloons are there in all?
  26. 26.2 + 16 =
  27. 27.7 + 3 + 6 =
  28. 28.5 + 6 + 5 =
  29. 29.There are 6 red balls and 9 blue balls. How many balls are there in all?
  30. 30.? + 3 = 4
  31. 31.Tara has 4 books and gets 9 books more. How many books does Tara have now?
  32. 32.7 + 6 + 4 =
  33. 33.4 + ? = 18
  34. 34.6 + ? = 12
  35. 35.3 + 2 =
  36. 36.14 + 5 =
  37. 37.Gurpreet has 9 pencils and gets 2 pencils more. How many pencils does Gurpreet have now?
  38. 38.7 + 4 + 6 =
  39. 39.Aditya has 3 balloons and gets 6 balloons more. How many balloons does Aditya have now?
  40. 40.Gurpreet has 5 kites and gets 12 kites more. How many kites does Gurpreet have now?

Answer key

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

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