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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 509 · 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. 1.27 + 4 =
  2. 2.196 ÷ 4 =
  3. 3.21 × 5 =
  4. 4.124 children stand in rows of 8. How many full rows can they make?
  5. 5.Best estimate of 37 × 94? (a) 36000 (b) 3600 (c) 360
  6. 6.2 + ? = 10
  7. 7.30 + 31 =
  8. 8.23 + 39 =
  9. 9.95 × 3 =
  10. 10.You buy a water bottle for ₹79 and pay with a ₹100 note. How much change do you get, in rupees?
  11. 11.What is the remainder when 27 is divided by 6?
  12. 12.You buy a kite for ₹20 and pay with a ₹100 note. How much change do you get, in rupees?
  13. 13.79 − 19 =
  14. 14.37 × 4 =
  15. 15.18² =
  16. 16.28² =
  17. 17.67 laddoos are packed in boxes of 6. How many laddoos are left over?
  18. 18.30 + 29 =
  19. 19.You buy a box of crayons for ₹80 and pay with a ₹100 note. How much change do you get, in rupees?
  20. 20.You buy a water bottle for ₹11 and a pen for ₹36. You pay with a ₹100 note. How much change do you get, in rupees?
  21. 21.6 + 7 =
  22. 22.44 + ? = 100
  23. 23.You buy a kite for ₹300 and pay with a ₹500 note. How much change do you get, in rupees?
  24. 24.74 − 36 =
  25. 25.34 × 7 =
  26. 26.Half of 90 =
  27. 27.25 + 26 =
  28. 28.52 × 6 =
  29. 29.A cricket match starts at 2:00 and the first innings ends at 4:15. How many minutes did the innings last?
  30. 30.25% of ₹870 =
  31. 31.224 ÷ 8 =
  32. 32.70 − 49 =
  33. 33.1020 − 991 =
  34. 34.16² =
  35. 35.18 + 19 =
  36. 36.You buy a notebook for ₹72 and pay with a ₹100 note. How much change do you get, in rupees?
  37. 37.14 + 9 =
  38. 38.Best estimate of 31 × 89? (a) 2700 (b) 270 (c) 27000
  39. 39.330 − 297 =
  40. 40.152 ÷ 4 =

Answer key

  1. 31
  2. 49
  3. 105
  4. 15
  5. 3600
  6. 8
  7. 61
  8. 62
  9. 285
  10. 21
  11. 3
  12. 80
  13. 60
  14. 148
  15. 324
  16. 784
  17. 1
  18. 59
  19. 20
  20. 53
  21. 13
  22. 56
  23. 200
  24. 38
  25. 238
  26. 45
  27. 51
  28. 312
  29. 135
  30. 217.5
  31. 28
  32. 21
  33. 29
  34. 256
  35. 37
  36. 28
  37. 23
  38. 2700
  39. 33
  40. 38

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