← Mixed mental challenge lesson New set →

Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 734 · 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. 1.29 + 4 =
  2. 2.1 + ? = 10
  3. 3.33 + 43 =
  4. 4.18 + 20 =
  5. 5.112 − 78 =
  6. 6.You buy a storybook for ₹40 and a pen for ₹23. You pay with a ₹100 note. How much change do you get, in rupees?
  7. 7.26 + 25 =
  8. 8.85 children stand in rows of 6. How many full rows can they make?
  9. 9.21² =
  10. 10.134 children stand in rows of 9. How many full rows can they make?
  11. 11.33 × 8 =
  12. 12.9 + ? = 10
  13. 13.53 laddoos are packed in boxes of 5. How many laddoos are left over?
  14. 14.13 + 12 =
  15. 15.63 × 4 =
  16. 16.301 − 294 =
  17. 17.75 + 7 =
  18. 18.2 + ? = 10
  19. 19.Best estimate of 297 + 728? (a) 800 (b) 1200 (c) 1000
  20. 20.A train leaves at 3:50 and reaches the next city at 4:40. How many minutes is the journey?
  21. 21.You buy a box of crayons for ₹292 and pay with a ₹500 note. How much change do you get, in rupees?
  22. 22.25% of ₹360 =
  23. 23.357 ÷ 7 =
  24. 24.56 + ? = 100
  25. 25.You buy a cricket ball for ₹45 and a pen for ₹11. You pay with a ₹100 note. How much change do you get, in rupees?
  26. 26.Best estimate of 78 × 57? (a) 4800 (b) 48000 (c) 480
  27. 27.94 − 24 =
  28. 28.You buy a water bottle for ₹284 and pay with a ₹500 note. How much change do you get, in rupees?
  29. 29.36 + 26 =
  30. 30.Double 43 =
  31. 31.You buy a kite for ₹363 and pay with a ₹500 note. How much change do you get, in rupees?
  32. 32.108 ÷ 4 =
  33. 33.125 ÷ 5 =
  34. 34.Best estimate of 629 + 753? (a) 1400 (b) 1600 (c) 1200
  35. 35.You buy a storybook for ₹26 and a pen for ₹22. You pay with a ₹100 note. How much change do you get, in rupees?
  36. 36.80 + 85 =
  37. 37.You buy a kite for ₹168 and pay with a ₹500 note. How much change do you get, in rupees?
  38. 38.27 + 82 =
  39. 39.43 + 41 =
  40. 40.70 × 4 =

Answer key

  1. 33
  2. 9
  3. 76
  4. 38
  5. 34
  6. 37
  7. 51
  8. 14
  9. 441
  10. 14
  11. 264
  12. 1
  13. 3
  14. 25
  15. 252
  16. 7
  17. 82
  18. 8
  19. 1000
  20. 50
  21. 208
  22. 90
  23. 51
  24. 44
  25. 44
  26. 4800
  27. 70
  28. 216
  29. 62
  30. 86
  31. 137
  32. 27
  33. 25
  34. 1400
  35. 52
  36. 165
  37. 332
  38. 109
  39. 84
  40. 280

Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths