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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 808 · 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. 1.14 + 1 =
  2. 2.6 + 1 + 10 =
  3. 3.Meera has 4 books and gets 14 books more. How many books does Meera have now?
  4. 4.10 + ? = 13
  5. 5.1 + 7 + 2 =
  6. 6.There are 10 blue balls and 10 white balls. How many balls are there in all?
  7. 7.Saanvi has 12 books and gets 2 books more. How many books does Saanvi have now?
  8. 8.5 + 3 =
  9. 9.5 + 2 + 1 =
  10. 10.13 + 3 =
  11. 11.Arjun has 12 kites and gets 3 kites more. How many kites does Arjun have now?
  12. 12.There are 6 white crayons and 4 yellow crayons. How many crayons are there in all?
  13. 13.Manav has 2 shells and gets 10 shells more. How many shells does Manav have now?
  14. 14.19 + 1 =
  15. 15.There are 3 red balls and 2 yellow balls. How many balls are there in all?
  16. 16.Sneha has 3 bananas and gets 5 bananas more. How many bananas does Sneha have now?
  17. 17.Diya has 10 mangoes and gets 8 mangoes more. How many mangoes does Diya have now?
  18. 18.? + 3 = 19
  19. 19.10 + 4 =
  20. 20.There are 2 white beads and 12 red beads. How many beads are there in all?
  21. 21.Manav has 10 mangoes and gets 7 mangoes more. How many mangoes does Manav have now?
  22. 22.Saanvi has 8 pencils and gets 9 pencils more. How many pencils does Saanvi have now?
  23. 23.15 + 4 =
  24. 24.Rohan has 7 flowers and gets 9 flowers more. How many flowers does Rohan have now?
  25. 25.There are 2 blue flowers and 12 white flowers. How many flowers are there in all?
  26. 26.There are 3 blue flowers and 17 white flowers. How many flowers are there in all?
  27. 27.1 + ? = 20
  28. 28.? + 4 = 6
  29. 29.2 + ? = 8
  30. 30.There are 10 green balloons and 2 yellow balloons. How many balloons are there in all?
  31. 31.1 + ? = 3
  32. 32.Farhan has 10 pencils and gets 3 pencils more. How many pencils does Farhan have now?
  33. 33.There are 9 red balloons and 4 yellow balloons. How many balloons are there in all?
  34. 34.3 + ? = 16
  35. 35.1 + 2 + 8 =
  36. 36.3 + 1 + 4 =
  37. 37.There are 12 pink balloons and 3 white balloons. How many balloons are there in all?
  38. 38.Kavya has 2 books and gets 18 books more. How many books does Kavya have now?
  39. 39.Farhan has 3 kites and gets 14 kites more. How many kites does Farhan have now?
  40. 40.There are 10 pink balloons and 2 white balloons. How many balloons are there in all?

Answer key

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

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