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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 188 · 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. 1.5 + 10 =
  2. 2.4 + ? = 8
  3. 3.16 + 3 =
  4. 4.19 + 1 =
  5. 5.There are 6 white crayons and 3 yellow crayons. How many crayons are there in all?
  6. 6.Farhan has 3 kites and gets 16 kites more. How many kites does Farhan have now?
  7. 7.There are 10 red beads and 3 blue beads. How many beads are there in all?
  8. 8.7 + 11 =
  9. 9.Gurpreet has 15 crayons and gets 4 crayons more. How many crayons does Gurpreet have now?
  10. 10.There are 12 white crayons and 5 red crayons. How many crayons are there in all?
  11. 11.? + 4 = 15
  12. 12.2 + ? = 9
  13. 13.Riya has 3 crayons and gets 13 crayons more. How many crayons does Riya have now?
  14. 14.There are 3 white kites and 13 blue kites. How many kites are there in all?
  15. 15.3 + 16 =
  16. 16.Pooja has 2 marbles and gets 9 marbles more. How many marbles does Pooja have now?
  17. 17.Tara has 3 balls and gets 6 balls more. How many balls does Tara have now?
  18. 18.Aditya has 8 kites and gets 2 kites more. How many kites does Aditya have now?
  19. 19.14 + 4 =
  20. 20.8 + 6 + 1 =
  21. 21.2 + 8 + 1 =
  22. 22.There are 7 red balls and 7 pink balls. How many balls are there in all?
  23. 23.Farhan has 7 mangoes and gets 12 mangoes more. How many mangoes does Farhan have now?
  24. 24.4 + 8 =
  25. 25.6 + 2 =
  26. 26.? + 2 = 3
  27. 27.Lakshmi has 12 flowers and gets 8 flowers more. How many flowers does Lakshmi have now?
  28. 28.3 + 8 + 8 =
  29. 29.10 + ? = 20
  30. 30.7 + 1 + 5 =
  31. 31.3 + 5 + 1 =
  32. 32.There are 4 green balloons and 12 blue balloons. How many balloons are there in all?
  33. 33.Karan has 5 balloons and gets 2 balloons more. How many balloons does Karan have now?
  34. 34.2 + 2 + 13 =
  35. 35.There are 9 pink kites and 4 yellow kites. How many kites are there in all?
  36. 36.14 + 5 =
  37. 37.Priya has 5 books and gets 5 books more. How many books does Priya have now?
  38. 38.? + 1 = 5
  39. 39.3 + 1 =
  40. 40.? + 14 = 18

Answer key

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

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