Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 863 · 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.A cricket match starts at 4:55 and the first innings ends at 7:50. How many minutes did the innings last?
2. 2.314 − 280 =
3. 3.34 + 19 =
4. 4.67 − 27 =
5. 5.What is the remainder when 35 is divided by 3?
6. 6.72 − 9 =
7. 7.59 + 41 =
8. 8.71 + ? = 100
9. 9.75 + 7 =
10. 10.37 + 6 =
11. 11.5% of ₹710 =
12. 12.18² =
13. 13.85 − 59 =
14. 14.A train leaves at 1:00 and reaches the next city at 3:10. How many minutes is the journey?
15. 15.47 + 67 =
16. 16.38 + 31 =
17. 17.61 children stand in rows of 4. How many full rows can they make?
18. 18.77 + 19 =
19. 19.Best estimate of 91 × 70? (a) 630 (b) 63000 (c) 6300
20. 20.568 ÷ 8 =
21. 21.What is the remainder when 69 is divided by 7?
22. 22.48 × 4 =
23. 23.Best estimate of 832 + 831? (a) 1800 (b) 1600 (c) 1400
24. 24.You buy a storybook for ₹58 and pay with a ₹100 note. How much change do you get, in rupees?
25. 25.You buy a notebook for ₹82 and pay with a ₹100 note. How much change do you get, in rupees?
26. 26.67 × 4 =
27. 27.35 + 19 =
28. 28.305 − 294 =
29. 29.22 − 9 =
30. 30.64 × 4 =
31. 31.You buy a bag of mangoes for ₹39 and a pen for ₹41. You pay with a ₹100 note. How much change do you get, in rupees?
32. 32.224 ÷ 8 =
33. 33.13 + 12 =
34. 34.75 + 17 =
35. 35.Half of 122 =
36. 36.153 ÷ 3 =
37. 37.51 + 19 =
38. 38.5 + ? = 10
39. 39.You buy a box of crayons for ₹34 and pay with a ₹100 note. How much change do you get, in rupees?
40. 40.84 × 3 =

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