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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 941 · 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 + 7 + 4 =
  2. 2.6 + 14 =
  3. 3.1 + 8 + 1 =
  4. 4.Joseph has 12 books and gets 7 books more. How many books does Joseph have now?
  5. 5.15 + 4 =
  6. 6.9 + 4 =
  7. 7.4 + 6 + 10 =
  8. 8.4 + 3 + 7 =
  9. 9.6 + 1 =
  10. 10.There are 3 green beads and 10 red beads. How many beads are there in all?
  11. 11.4 + ? = 20
  12. 12.Nisha has 8 shells and gets 3 shells more. How many shells does Nisha have now?
  13. 13.There are 2 green balloons and 12 yellow balloons. How many balloons are there in all?
  14. 14.6 + 11 =
  15. 15.15 + 3 =
  16. 16.Kavya has 10 kites and gets 3 kites more. How many kites does Kavya have now?
  17. 17.Manav has 9 mangoes and gets 5 mangoes more. How many mangoes does Manav have now?
  18. 18.Aditya has 2 pencils and gets 3 pencils more. How many pencils does Aditya have now?
  19. 19.Nisha has 11 shells and gets 6 shells more. How many shells does Nisha have now?
  20. 20.5 + 8 =
  21. 21.6 + 1 + 5 =
  22. 22.4 + 1 =
  23. 23.2 + 4 + 13 =
  24. 24.Gurpreet has 9 balls and gets 9 balls more. How many balls does Gurpreet have now?
  25. 25.There are 3 red beads and 5 white beads. How many beads are there in all?
  26. 26.7 + ? = 20
  27. 27.3 + ? = 5
  28. 28.There are 7 pink beads and 12 red beads. How many beads are there in all?
  29. 29.? + 6 = 8
  30. 30.3 + 10 =
  31. 31.4 + 8 + 1 =
  32. 32.4 + 9 =
  33. 33.Rohan has 5 books and gets 12 books more. How many books does Rohan have now?
  34. 34.? + 1 = 9
  35. 35.There are 2 red kites and 13 yellow kites. How many kites are there in all?
  36. 36.There are 9 blue flowers and 9 pink flowers. How many flowers are there in all?
  37. 37.8 + ? = 18
  38. 38.Dev has 14 pencils and gets 4 pencils more. How many pencils does Dev have now?
  39. 39.Sneha has 4 crayons and gets 14 crayons more. How many crayons does Sneha have now?
  40. 40.Aarav has 7 books and gets 1 book more. How many books does Aarav have now?

Answer key

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

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