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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 950 · 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. 1.13 + 2 =
  2. 2.4 + 10 =
  3. 3.4 + 2 + 13 =
  4. 4.Aarav has 13 books and gets 4 books more. How many books does Aarav have now?
  5. 5.There are 3 green balloons and 10 white balloons. How many balloons are there in all?
  6. 6.Ishaan has 2 shells and gets 12 shells more. How many shells does Ishaan have now?
  7. 7.There are 3 red balloons and 4 blue balloons. How many balloons are there in all?
  8. 8.There are 2 blue kites and 10 yellow kites. How many kites are there in all?
  9. 9.4 + 3 =
  10. 10.There are 6 blue beads and 10 red beads. How many beads are there in all?
  11. 11.Gurpreet has 5 balloons and gets 11 balloons more. How many balloons does Gurpreet have now?
  12. 12.2 + ? = 3
  13. 13.Priya has 13 balls and gets 7 balls more. How many balls does Priya have now?
  14. 14.1 + 7 + 2 =
  15. 15.There are 10 blue balloons and 2 green balloons. How many balloons are there in all?
  16. 16.Lakshmi has 5 shells and gets 5 shells more. How many shells does Lakshmi have now?
  17. 17.3 + 5 + 10 =
  18. 18.? + 5 = 12
  19. 19.There are 5 red crayons and 4 green crayons. How many crayons are there in all?
  20. 20.8 + 10 =
  21. 21.Tara has 9 balloons and gets 6 balloons more. How many balloons does Tara have now?
  22. 22.Arjun has 4 balloons and gets 6 balloons more. How many balloons does Arjun have now?
  23. 23.Arjun has 5 laddoos and gets 2 laddoos more. How many laddoos does Arjun have now?
  24. 24.Manav has 15 kites and gets 2 kites more. How many kites does Manav have now?
  25. 25.12 + 1 =
  26. 26.There are 9 pink balloons and 6 blue balloons. How many balloons are there in all?
  27. 27.Aditya has 15 mangoes and gets 1 mango more. How many mangoes does Aditya have now?
  28. 28.7 + 4 =
  29. 29.Diya has 2 mangoes and gets 5 mangoes more. How many mangoes does Diya have now?
  30. 30.1 + 1 + 12 =
  31. 31.Lakshmi has 11 crayons and gets 1 crayon more. How many crayons does Lakshmi have now?
  32. 32.? + 4 = 5
  33. 33.2 + 5 =
  34. 34.Lakshmi has 4 balloons and gets 8 balloons more. How many balloons does Lakshmi have now?
  35. 35.Lakshmi has 4 balls and gets 8 balls more. How many balls does Lakshmi have now?
  36. 36.Manav has 5 balloons and gets 11 balloons more. How many balloons does Manav have now?
  37. 37.3 + 3 + 13 =
  38. 38.4 + 7 =
  39. 39.13 + 1 =
  40. 40.Diya has 15 bananas and gets 1 banana more. How many bananas does Diya have now?

Answer key

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

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