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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 483 · 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. 1.3 + 3 + 13 =
  2. 2.Rohan has 8 shells and gets 4 shells more. How many shells does Rohan have now?
  3. 3.There are 10 green kites and 6 yellow kites. How many kites are there in all?
  4. 4.There are 11 blue balls and 5 pink balls. How many balls are there in all?
  5. 5.? + 7 = 8
  6. 6.There are 12 blue flowers and 2 yellow flowers. How many flowers are there in all?
  7. 7.Rahul has 9 pencils and gets 8 pencils more. How many pencils does Rahul have now?
  8. 8.Pooja has 14 marbles and gets 3 marbles more. How many marbles does Pooja have now?
  9. 9.There are 8 red balloons and 6 pink balloons. How many balloons are there in all?
  10. 10.12 + ? = 14
  11. 11.8 + 7 + 3 =
  12. 12.Kavya has 10 balls and gets 1 ball more. How many balls does Kavya have now?
  13. 13.16 + 3 =
  14. 14.Rahul has 7 balls and gets 10 balls more. How many balls does Rahul have now?
  15. 15.2 + 3 =
  16. 16.16 + 1 =
  17. 17.There are 2 red beads and 13 green beads. How many beads are there in all?
  18. 18.3 + ? = 4
  19. 19.Kabir has 15 kites and gets 5 kites more. How many kites does Kabir have now?
  20. 20.1 + 8 + 11 =
  21. 21.12 + ? = 20
  22. 22.? + 17 = 20
  23. 23.10 + ? = 12
  24. 24.There are 12 white crayons and 3 green crayons. How many crayons are there in all?
  25. 25.Diya has 13 kites and gets 1 kite more. How many kites does Diya have now?
  26. 26.There are 11 pink balloons and 2 yellow balloons. How many balloons are there in all?
  27. 27.19 + 1 =
  28. 28.Diya has 3 mangoes and gets 8 mangoes more. How many mangoes does Diya have now?
  29. 29.Arjun has 5 flowers and gets 6 flowers more. How many flowers does Arjun have now?
  30. 30.7 + 2 + 5 =
  31. 31.7 + ? = 9
  32. 32.2 + ? = 10
  33. 33.1 + 4 + 2 =
  34. 34.? + 2 = 5
  35. 35.6 + 1 =
  36. 36.1 + ? = 5
  37. 37.7 + 1 + 11 =
  38. 38.Isha has 13 crayons and gets 2 crayons more. How many crayons does Isha have now?
  39. 39.7 + 6 + 6 =
  40. 40.There are 12 green balloons and 3 yellow balloons. How many balloons are there in all?

Answer key

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

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