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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 496 · 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. 1.4 + 11 =
  2. 2.Farhan has 13 flowers and gets 6 flowers more. How many flowers does Farhan have now?
  3. 3.Manav has 12 shells and gets 4 shells more. How many shells does Manav have now?
  4. 4.There are 9 pink balloons and 2 red balloons. How many balloons are there in all?
  5. 5.Kavya has 8 shells and gets 6 shells more. How many shells does Kavya have now?
  6. 6.8 + 5 + 7 =
  7. 7.Dev has 15 balloons and gets 3 balloons more. How many balloons does Dev have now?
  8. 8.6 + 5 + 6 =
  9. 9.4 + 13 =
  10. 10.Kavya has 8 shells and gets 11 shells more. How many shells does Kavya have now?
  11. 11.11 + ? = 12
  12. 12.14 + 4 =
  13. 13.? + 2 = 6
  14. 14.Pooja has 10 marbles and gets 4 marbles more. How many marbles does Pooja have now?
  15. 15.2 + 1 + 10 =
  16. 16.6 + 1 =
  17. 17.8 + 3 + 5 =
  18. 18.1 + ? = 3
  19. 19.Nisha has 13 crayons and gets 2 crayons more. How many crayons does Nisha have now?
  20. 20.Priya has 4 pencils and gets 16 pencils more. How many pencils does Priya have now?
  21. 21.? + 4 = 13
  22. 22.Farhan has 9 bananas and gets 3 bananas more. How many bananas does Farhan have now?
  23. 23.9 + 2 =
  24. 24.13 + 7 =
  25. 25.There are 8 pink balls and 8 green balls. How many balls are there in all?
  26. 26.There are 6 red flowers and 13 pink flowers. How many flowers are there in all?
  27. 27.1 + 5 =
  28. 28.There are 10 green balloons and 2 blue balloons. How many balloons are there in all?
  29. 29.16 + 1 =
  30. 30.There are 3 pink crayons and 2 white crayons. How many crayons are there in all?
  31. 31.1 + 1 + 16 =
  32. 32.4 + 15 =
  33. 33.12 + 5 =
  34. 34.5 + 3 =
  35. 35.9 + 11 =
  36. 36.? + 1 = 20
  37. 37.12 + 2 =
  38. 38.18 + 1 =
  39. 39.15 + 3 =
  40. 40.There are 3 yellow balloons and 16 red balloons. How many balloons are there in all?

Answer key

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

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