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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 275 · 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. 1.16 + 3 =
  2. 2.4 + ? = 9
  3. 3.4 + ? = 12
  4. 4.18 + 2 =
  5. 5.6 + 2 + 9 =
  6. 6.There are 5 yellow flowers and 4 white flowers. How many flowers are there in all?
  7. 7.16 + 2 =
  8. 8.Isha has 3 mangoes and gets 8 mangoes more. How many mangoes does Isha have now?
  9. 9.6 + ? = 12
  10. 10.2 + 5 =
  11. 11.There are 6 blue kites and 6 yellow kites. How many kites are there in all?
  12. 12.5 + ? = 10
  13. 13.Meera has 10 laddoos and gets 2 laddoos more. How many laddoos does Meera have now?
  14. 14.There are 9 green kites and 9 red kites. How many kites are there in all?
  15. 15.7 + 7 + 6 =
  16. 16.1 + ? = 6
  17. 17.Sneha has 5 kites and gets 9 kites more. How many kites does Sneha have now?
  18. 18.13 + 4 =
  19. 19.? + 8 = 13
  20. 20.8 + 1 =
  21. 21.Kabir has 10 kites and gets 9 kites more. How many kites does Kabir have now?
  22. 22.1 + ? = 10
  23. 23.Sneha has 8 mangoes and gets 6 mangoes more. How many mangoes does Sneha have now?
  24. 24.There are 2 red flowers and 14 blue flowers. How many flowers are there in all?
  25. 25.There are 6 red balloons and 4 green balloons. How many balloons are there in all?
  26. 26.Aditya has 8 mangoes and gets 4 mangoes more. How many mangoes does Aditya have now?
  27. 27.There are 8 yellow beads and 8 green beads. How many beads are there in all?
  28. 28.There are 2 pink beads and 11 yellow beads. How many beads are there in all?
  29. 29.Diya has 9 laddoos and gets 4 laddoos more. How many laddoos does Diya have now?
  30. 30.Aditya has 10 kites and gets 10 kites more. How many kites does Aditya have now?
  31. 31.11 + ? = 14
  32. 32.8 + 8 + 3 =
  33. 33.Manav has 9 laddoos and gets 3 laddoos more. How many laddoos does Manav have now?
  34. 34.8 + 9 =
  35. 35.There are 5 pink kites and 11 red kites. How many kites are there in all?
  36. 36.Priya has 7 marbles and gets 8 marbles more. How many marbles does Priya have now?
  37. 37.2 + 11 =
  38. 38.8 + 4 + 1 =
  39. 39.? + 9 = 15
  40. 40.Diya has 5 mangoes and gets 3 mangoes more. How many mangoes does Diya have now?

Answer key

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

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