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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 392 · 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. 1.14 + ? = 17
  2. 2.? + 4 = 20
  3. 3.3 + 7 + 4 =
  4. 4.8 + 7 + 4 =
  5. 5.There are 5 pink balls and 4 green balls. How many balls are there in all?
  6. 6.5 + 1 + 3 =
  7. 7.Kavya has 8 crayons and gets 5 crayons more. How many crayons does Kavya have now?
  8. 8.Karan has 5 bananas and gets 6 bananas more. How many bananas does Karan have now?
  9. 9.Ishaan has 10 bananas and gets 10 bananas more. How many bananas does Ishaan have now?
  10. 10.There are 10 red beads and 5 white beads. How many beads are there in all?
  11. 11.There are 9 green balloons and 6 yellow balloons. How many balloons are there in all?
  12. 12.Riya has 15 flowers and gets 1 flower more. How many flowers does Riya have now?
  13. 13.? + 10 = 14
  14. 14.2 + 4 + 2 =
  15. 15.Karan has 11 bananas and gets 4 bananas more. How many bananas does Karan have now?
  16. 16.3 + ? = 9
  17. 17.? + 7 = 8
  18. 18.Nisha has 2 shells and gets 5 shells more. How many shells does Nisha have now?
  19. 19.3 + 3 + 11 =
  20. 20.? + 1 = 18
  21. 21.5 + ? = 7
  22. 22.There are 4 yellow kites and 4 red kites. How many kites are there in all?
  23. 23.Aarav has 2 bananas and gets 17 bananas more. How many bananas does Aarav have now?
  24. 24.There are 12 blue beads and 6 yellow beads. How many beads are there in all?
  25. 25.5 + ? = 10
  26. 26.5 + 10 =
  27. 27.6 + 7 + 3 =
  28. 28.3 + 6 + 3 =
  29. 29.Priya has 2 flowers and gets 18 flowers more. How many flowers does Priya have now?
  30. 30.15 + 3 =
  31. 31.Lakshmi has 7 marbles and gets 9 marbles more. How many marbles does Lakshmi have now?
  32. 32.5 + 1 =
  33. 33.6 + 8 =
  34. 34.2 + 5 + 3 =
  35. 35.Isha has 5 shells and gets 11 shells more. How many shells does Isha have now?
  36. 36.? + 12 = 16
  37. 37.2 + 2 + 14 =
  38. 38.5 + 7 + 6 =
  39. 39.Manav has 3 bananas and gets 12 bananas more. How many bananas does Manav have now?
  40. 40.? + 3 = 19

Answer key

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

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