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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 986 · 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. 1.19 + 1 =
  2. 2.Rahul has 5 pencils and gets 10 pencils more. How many pencils does Rahul have now?
  3. 3.8 + 2 + 9 =
  4. 4.Aarav has 8 marbles and gets 9 marbles more. How many marbles does Aarav have now?
  5. 5.12 + 2 =
  6. 6.3 + 2 + 5 =
  7. 7.Rahul has 8 pencils and gets 3 pencils more. How many pencils does Rahul have now?
  8. 8.Rohan has 3 marbles and gets 15 marbles more. How many marbles does Rohan have now?
  9. 9.14 + 3 =
  10. 10.? + 2 = 16
  11. 11.4 + 7 =
  12. 12.3 + 7 + 2 =
  13. 13.? + 10 = 11
  14. 14.Farhan has 7 crayons and gets 5 crayons more. How many crayons does Farhan have now?
  15. 15.5 + 13 =
  16. 16.? + 13 = 17
  17. 17.3 + ? = 6
  18. 18.? + 1 = 15
  19. 19.There are 10 pink balloons and 4 blue balloons. How many balloons are there in all?
  20. 20.Saanvi has 3 balls and gets 2 balls more. How many balls does Saanvi have now?
  21. 21.17 + 1 =
  22. 22.Gurpreet has 3 mangoes and gets 16 mangoes more. How many mangoes does Gurpreet have now?
  23. 23.1 + 5 + 8 =
  24. 24.? + 4 = 17
  25. 25.There are 8 red balls and 2 green balls. How many balls are there in all?
  26. 26.7 + 5 + 5 =
  27. 27.? + 9 = 15
  28. 28.7 + 1 =
  29. 29.1 + ? = 4
  30. 30.There are 4 yellow balls and 10 green balls. How many balls are there in all?
  31. 31.? + 6 = 19
  32. 32.? + 12 = 16
  33. 33.Manav has 13 pencils and gets 7 pencils more. How many pencils does Manav have now?
  34. 34.17 + 2 =
  35. 35.1 + ? = 3
  36. 36.Diya has 6 bananas and gets 12 bananas more. How many bananas does Diya have now?
  37. 37.3 + 13 =
  38. 38.Riya has 7 mangoes and gets 2 mangoes more. How many mangoes does Riya have now?
  39. 39.5 + 3 + 7 =
  40. 40.There are 3 pink beads and 10 yellow beads. How many beads are there in all?

Answer key

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

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