Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 415 · 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. 1.10% of ₹770 =
2. 2.You buy a water bottle for ₹354 and pay with a ₹500 note. How much change do you get, in rupees?
3. 3.23 × 4 =
4. 4.A cricket match starts at 5:10 and the first innings ends at 8:20. How many minutes did the innings last?
5. 5.82 + 74 =
6. 6.A train leaves at 8:55 and reaches the next city at 9:35. How many minutes is the journey?
7. 7.128 ÷ 4 =
8. 8.15 × 5 =
9. 9.You buy a storybook for ₹27 and a pen for ₹23. You pay with a ₹100 note. How much change do you get, in rupees?
10. 10.140 ÷ 4 =
11. 11.85 − 69 =
12. 12.78 laddoos are packed in boxes of 8. How many laddoos are left over?
13. 13.524 − 494 =
14. 14.93 − 64 =
15. 15.58 + 4 =
16. 16.165 ÷ 3 =
17. 17.24² =
18. 18.511 ÷ 7 =
19. 19.106 − 85 =
20. 20.Half of 154 =
21. 21.19 + 29 =
22. 22.88 + 8 =
23. 23.A train leaves at 2:55 and reaches the next city at 6:00. How many minutes is the journey?
24. 24.49 + 7 =
25. 25.Best estimate of 762 + 645? (a) 1200 (b) 1600 (c) 1400
26. 26.Double 67 =
27. 27.530 + 99 =
28. 28.59 + 6 =
29. 29.144 ÷ 8 =
30. 30.4 + ? = 10
31. 31.You buy a cricket ball for ₹111 and pay with a ₹500 note. How much change do you get, in rupees?
32. 32.81 − 59 =
33. 33.96 ÷ 8 =
34. 34.Best estimate of 229 + 324? (a) 700 (b) 500 (c) 300
35. 35.12 + 13 =
36. 36.46 + 6 =
37. 37.145 ÷ 5 =
38. 38.Best estimate of 14 × 52? (a) 5000 (b) 500 (c) 50
39. 39.80 + 85 =
40. 40.74 × 7 =

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