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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 606 · 40 questions
TalentJR

How to do it in your head (Look first): A 9, 19 or 99 → round and adjust. Two close numbers → count up (or near doubles when adding). × or ÷ by 4 or 8 → double or halve; other sums → split into tens and ones.

NameDateTime takenScore ___ / 40
  1. 1.504 ÷ 8 =
  2. 2.207 − 185 =
  3. 3.279 ÷ 9 =
  4. 4.50% of ₹580 =
  5. 5.22 + 29 =
  6. 6.584 ÷ 8 =
  7. 7.16 × 3 =
  8. 8.Double 25 =
  9. 9.455 − 99 =
  10. 10.Best estimate of 152 + 380? (a) 400 (b) 800 (c) 600
  11. 11.26 + 8 =
  12. 12.228 − 196 =
  13. 13.Half of 48 =
  14. 14.Best estimate of 82 × 36? (a) 32000 (b) 3200 (c) 320
  15. 15.577 − 99 =
  16. 16.82 laddoos are packed in boxes of 8. How many laddoos are left over?
  17. 17.168 ÷ 8 =
  18. 18.43 × 4 =
  19. 19.96 − 67 =
  20. 20.470 ÷ 5 =
  21. 21.346 − 99 =
  22. 22.55 + 7 =
  23. 23.57 + 87 =
  24. 24.232 ÷ 8 =
  25. 25.28 + ? = 100
  26. 26.21 × 8 =
  27. 27.78 + 9 =
  28. 28.38 + 8 =
  29. 29.Best estimate of 616 + 602? (a) 1000 (b) 1400 (c) 1200
  30. 30.18 + 19 =
  31. 31.106 − 86 =
  32. 32.54 + 62 =
  33. 33.1025 − 992 =
  34. 34.21 + 22 =
  35. 35.16² =
  36. 36.29 + 8 =
  37. 37.Double 26 =
  38. 38.What is the remainder when 20 is divided by 3?
  39. 39.66 − 19 =
  40. 40.You buy a pencil box for ₹278 and pay with a ₹500 note. How much change do you get, in rupees?

Answer key

  1. 63
  2. 22
  3. 31
  4. 290
  5. 51
  6. 73
  7. 48
  8. 50
  9. 356
  10. 600
  11. 34
  12. 32
  13. 24
  14. 3200
  15. 478
  16. 2
  17. 21
  18. 172
  19. 29
  20. 94
  21. 247
  22. 62
  23. 144
  24. 29
  25. 72
  26. 168
  27. 87
  28. 46
  29. 1200
  30. 37
  31. 20
  32. 116
  33. 33
  34. 43
  35. 256
  36. 37
  37. 52
  38. 2
  39. 47
  40. 222

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