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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 559 · 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. 1.4 + ? = 6
  2. 2.1 + 8 + 3 =
  3. 3.There are 8 pink balloons and 12 green balloons. How many balloons are there in all?
  4. 4.? + 9 = 16
  5. 5.11 + 6 =
  6. 6.4 + 16 =
  7. 7.Saanvi has 11 shells and gets 2 shells more. How many shells does Saanvi have now?
  8. 8.3 + ? = 17
  9. 9.There are 5 yellow balloons and 6 red balloons. How many balloons are there in all?
  10. 10.2 + 2 + 1 =
  11. 11.4 + 3 + 12 =
  12. 12.Rohan has 10 books and gets 6 books more. How many books does Rohan have now?
  13. 13.There are 12 red balls and 3 yellow balls. How many balls are there in all?
  14. 14.There are 7 white beads and 4 red beads. How many beads are there in all?
  15. 15.12 + 5 =
  16. 16.Tara has 13 mangoes and gets 2 mangoes more. How many mangoes does Tara have now?
  17. 17.Vivaan has 3 pencils and gets 7 pencils more. How many pencils does Vivaan have now?
  18. 18.8 + 10 =
  19. 19.3 + 11 =
  20. 20.There are 2 white beads and 7 pink beads. How many beads are there in all?
  21. 21.8 + 5 + 3 =
  22. 22.There are 9 yellow balls and 2 green balls. How many balls are there in all?
  23. 23.Kavya has 9 balls and gets 5 balls more. How many balls does Kavya have now?
  24. 24.2 + 1 + 17 =
  25. 25.8 + ? = 20
  26. 26.16 + 2 =
  27. 27.? + 4 = 7
  28. 28.Zoya has 5 mangoes and gets 5 mangoes more. How many mangoes does Zoya have now?
  29. 29.? + 1 = 16
  30. 30.5 + 9 =
  31. 31.Aditya has 6 kites and gets 1 kite more. How many kites does Aditya have now?
  32. 32.5 + 3 + 6 =
  33. 33.6 + 2 + 1 =
  34. 34.Manav has 2 kites and gets 11 kites more. How many kites does Manav have now?
  35. 35.7 + 5 + 3 =
  36. 36.4 + 15 =
  37. 37.There are 12 green kites and 2 red kites. How many kites are there in all?
  38. 38.4 + 1 =
  39. 39.? + 5 = 7
  40. 40.Manav has 5 marbles and gets 9 marbles more. How many marbles does Manav have now?

Answer key

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

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