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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 165 · 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. 2.3 + ? = 6
  3. 3.12 + 3 =
  4. 4.8 + 4 + 5 =
  5. 5.1 + ? = 3
  6. 6.Isha has 13 kites and gets 2 kites more. How many kites does Isha have now?
  7. 7.Kabir has 6 books and gets 1 book more. How many books does Kabir have now?
  8. 8.? + 4 = 8
  9. 9.There are 11 red balls and 3 yellow balls. How many balls are there in all?
  10. 10.6 + 2 =
  11. 11.6 + 2 + 2 =
  12. 12.1 + 6 + 11 =
  13. 13.11 + 6 =
  14. 14.4 + 3 + 5 =
  15. 15.13 + 2 =
  16. 16.Sneha has 4 kites and gets 1 kite more. How many kites does Sneha have now?
  17. 17.3 + 8 + 6 =
  18. 18.Karan has 4 marbles and gets 3 marbles more. How many marbles does Karan have now?
  19. 19.17 + 2 =
  20. 20.There are 10 red flowers and 10 green flowers. How many flowers are there in all?
  21. 21.? + 2 = 3
  22. 22.Isha has 13 crayons and gets 5 crayons more. How many crayons does Isha have now?
  23. 23.8 + 3 =
  24. 24.2 + 9 =
  25. 25.4 + 4 =
  26. 26.There are 9 green beads and 9 pink beads. How many beads are there in all?
  27. 27.4 + 3 =
  28. 28.? + 3 = 11
  29. 29.8 + 1 =
  30. 30.? + 12 = 15
  31. 31.Lakshmi has 8 shells and gets 12 shells more. How many shells does Lakshmi have now?
  32. 32.7 + 1 =
  33. 33.There are 5 green kites and 6 red kites. How many kites are there in all?
  34. 34.8 + 3 + 4 =
  35. 35.Isha has 15 balls and gets 3 balls more. How many balls does Isha have now?
  36. 36.Saanvi has 12 bananas and gets 2 bananas more. How many bananas does Saanvi have now?
  37. 37.8 + 7 + 2 =
  38. 38.8 + ? = 19
  39. 39.Gurpreet has 10 bananas and gets 4 bananas more. How many bananas does Gurpreet have now?
  40. 40.? + 10 = 14

Answer key

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

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