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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 341 · 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. 1.15 + 4 =
  2. 2.15 + 1 =
  3. 3.11 + ? = 17
  4. 4.6 + 3 + 1 =
  5. 5.Pooja has 12 laddoos and gets 6 laddoos more. How many laddoos does Pooja have now?
  6. 6.6 + 1 + 4 =
  7. 7.Farhan has 4 pencils and gets 13 pencils more. How many pencils does Farhan have now?
  8. 8.7 + 2 =
  9. 9.8 + ? = 11
  10. 10.19 + 1 =
  11. 11.Riya has 11 flowers and gets 3 flowers more. How many flowers does Riya have now?
  12. 12.1 + 4 + 12 =
  13. 13.1 + 8 + 7 =
  14. 14.Lakshmi has 8 mangoes and gets 4 mangoes more. How many mangoes does Lakshmi have now?
  15. 15.Ishaan has 5 marbles and gets 11 marbles more. How many marbles does Ishaan have now?
  16. 16.There are 7 red crayons and 13 green crayons. How many crayons are there in all?
  17. 17.1 + ? = 3
  18. 18.2 + 3 + 15 =
  19. 19.17 + 3 =
  20. 20.Gurpreet has 2 kites and gets 12 kites more. How many kites does Gurpreet have now?
  21. 21.6 + 11 =
  22. 22.3 + 2 + 6 =
  23. 23.Ananya has 8 balls and gets 5 balls more. How many balls does Ananya have now?
  24. 24.Zoya has 6 books and gets 7 books more. How many books does Zoya have now?
  25. 25.8 + 8 + 2 =
  26. 26.4 + 3 + 3 =
  27. 27.There are 10 blue flowers and 2 red flowers. How many flowers are there in all?
  28. 28.? + 5 = 8
  29. 29.7 + 12 =
  30. 30.There are 9 pink beads and 6 red beads. How many beads are there in all?
  31. 31.16 + 2 =
  32. 32.Karan has 14 books and gets 6 books more. How many books does Karan have now?
  33. 33.There are 3 yellow beads and 12 red beads. How many beads are there in all?
  34. 34.4 + 8 + 2 =
  35. 35.11 + 9 =
  36. 36.Ananya has 6 pencils and gets 7 pencils more. How many pencils does Ananya have now?
  37. 37.2 + 13 =
  38. 38.There are 12 blue flowers and 6 green flowers. How many flowers are there in all?
  39. 39.3 + 4 + 1 =
  40. 40.9 + 4 =

Answer key

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

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