Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 700 · 40 questions

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.

1. 1.2 + ? = 10
2. 2.13 × 4 =
3. 3.You buy a storybook for ₹21 and a pen for ₹31. You pay with a ₹100 note. How much change do you get, in rupees?
4. 4.9 + 10 =
5. 5.11² =
6. 6.82 + 82 =
7. 7.Half of 76 =
8. 8.What is the remainder when 59 is divided by 8?
9. 9.11 + ? = 100
10. 10.Half of 72 =
11. 11.A train leaves at 1:00 and reaches the next city at 2:55. How many minutes is the journey?
12. 12.Half of 158 =
13. 13.25% of ₹480 =
14. 14.8 + 9 =
15. 15.78 − 9 =
16. 16.230 − 99 =
17. 17.37 + 9 =
18. 18.You buy a kite for ₹135 and pay with a ₹500 note. How much change do you get, in rupees?
19. 19.18² =
20. 20.Best estimate of 37 × 66? (a) 2800 (b) 280 (c) 28000
21. 21.48 × 3 =
22. 22.12 + 11 =
23. 23.16 + 8 =
24. 24.Best estimate of 399 + 310? (a) 900 (b) 700 (c) 500
25. 25.68 + 3 =
26. 26.50% of ₹530 =
27. 27.78 × 3 =
28. 28.You start your homework at 3:00 and finish at 4:15. How many minutes did you work?
29. 29.92 ÷ 4 =
30. 30.8 + 8 =
31. 31.A train leaves at 3:25 and reaches the next city at 3:55. How many minutes is the journey?
32. 32.What is the remainder when 51 is divided by 7?
33. 33.97 − 42 =
34. 34.47 + 5 =
35. 35.80 − 29 =
36. 36.25% of ₹40 =
37. 37.9 + ? = 10
38. 38.53 − 41 =
39. 39.Best estimate of 272 + 721? (a) 800 (b) 1000 (c) 1200
40. 40.1004 − 997 =

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