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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 736 · 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.Best estimate of 30 × 31? (a) 9000 (b) 900 (c) 90
  2. 2.2 + ? = 10
  3. 3.You buy a bag of mangoes for ₹97 and pay with a ₹100 note. How much change do you get, in rupees?
  4. 4.14² =
  5. 5.19 × 3 =
  6. 6.You buy a bag of mangoes for ₹37 and a pen for ₹34. You pay with a ₹100 note. How much change do you get, in rupees?
  7. 7.58 − 13 =
  8. 8.16 × 8 =
  9. 9.508 − 492 =
  10. 10.679 ÷ 7 =
  11. 11.64 − 49 =
  12. 12.95 − 19 =
  13. 13.Best estimate of 70 × 68? (a) 49000 (b) 490 (c) 4900
  14. 14.164 ÷ 4 =
  15. 15.773 + 99 =
  16. 16.144 ÷ 4 =
  17. 17.7 + 8 =
  18. 18.Double 57 =
  19. 19.60 − 44 =
  20. 20.63 + 49 =
  21. 21.9 + ? = 10
  22. 22.48 − 19 =
  23. 23.14 × 4 =
  24. 24.Double 89 =
  25. 25.517 − 481 =
  26. 26.Half of 174 =
  27. 27.23 × 4 =
  28. 28.103 − 55 =
  29. 29.Double 99 =
  30. 30.56 − 19 =
  31. 31.41 × 3 =
  32. 32.14 + 29 =
  33. 33.9 + 11 =
  34. 34.What is the remainder when 37 is divided by 4?
  35. 35.51 × 4 =
  36. 36.507 − 480 =
  37. 37.16 + 18 =
  38. 38.13² =
  39. 39.69 + 4 =
  40. 40.220 ÷ 5 =

Answer key

  1. 900
  2. 8
  3. 3
  4. 196
  5. 57
  6. 29
  7. 45
  8. 128
  9. 16
  10. 97
  11. 15
  12. 76
  13. 4900
  14. 41
  15. 872
  16. 36
  17. 15
  18. 114
  19. 16
  20. 112
  21. 1
  22. 29
  23. 56
  24. 178
  25. 36
  26. 87
  27. 92
  28. 48
  29. 198
  30. 37
  31. 123
  32. 43
  33. 20
  34. 1
  35. 204
  36. 27
  37. 34
  38. 169
  39. 73
  40. 44

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