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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 848 · 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.Manav has 5 balloons and gets 5 balloons more. How many balloons does Manav have now?
  2. 2.Isha has 14 balls and gets 1 ball more. How many balls does Isha have now?
  3. 3.5 + 6 + 6 =
  4. 4.Manav has 7 flowers and gets 11 flowers more. How many flowers does Manav have now?
  5. 5.There are 4 blue flowers and 2 yellow flowers. How many flowers are there in all?
  6. 6.Vivaan has 9 kites and gets 10 kites more. How many kites does Vivaan have now?
  7. 7.There are 6 yellow balloons and 6 blue balloons. How many balloons are there in all?
  8. 8.? + 7 = 10
  9. 9.2 + ? = 12
  10. 10.7 + 5 + 1 =
  11. 11.Tara has 7 mangoes and gets 8 mangoes more. How many mangoes does Tara have now?
  12. 12.There are 4 white crayons and 16 pink crayons. How many crayons are there in all?
  13. 13.There are 7 green flowers and 3 red flowers. How many flowers are there in all?
  14. 14.There are 10 green beads and 2 red beads. How many beads are there in all?
  15. 15.5 + ? = 11
  16. 16.There are 4 blue flowers and 14 yellow flowers. How many flowers are there in all?
  17. 17.Lakshmi has 9 balloons and gets 5 balloons more. How many balloons does Lakshmi have now?
  18. 18.2 + 6 + 4 =
  19. 19.There are 4 yellow balls and 13 blue balls. How many balls are there in all?
  20. 20.? + 1 = 5
  21. 21.8 + 11 =
  22. 22.Gurpreet has 5 marbles and gets 5 marbles more. How many marbles does Gurpreet have now?
  23. 23.Dev has 10 pencils and gets 10 pencils more. How many pencils does Dev have now?
  24. 24.4 + ? = 16
  25. 25.11 + 9 =
  26. 26.Ishaan has 5 books and gets 7 books more. How many books does Ishaan have now?
  27. 27.There are 9 pink balls and 8 blue balls. How many balls are there in all?
  28. 28.8 + 1 + 3 =
  29. 29.3 + ? = 5
  30. 30.? + 8 = 10
  31. 31.? + 2 = 7
  32. 32.Farhan has 7 pencils and gets 12 pencils more. How many pencils does Farhan have now?
  33. 33.3 + 8 + 5 =
  34. 34.7 + 5 + 2 =
  35. 35.Karan has 9 shells and gets 4 shells more. How many shells does Karan have now?
  36. 36.There are 4 white flowers and 15 pink flowers. How many flowers are there in all?
  37. 37.8 + 7 + 5 =
  38. 38.? + 11 = 16
  39. 39.6 + 10 =
  40. 40.19 + 1 =

Answer key

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

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