Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 353 · 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 train leaves at 4:35 and reaches the next city at 5:20. How many minutes is the journey?
2. 2.176 ÷ 8 =
3. 3.You buy a pencil box for ₹45 and a pen for ₹13. You pay with a ₹100 note. How much change do you get, in rupees?
4. 4.91 − 29 =
5. 5.10 + 11 =
6. 6.18 × 8 =
7. 7.84 × 4 =
8. 8.47 + 36 =
9. 9.21² =
10. 10.12 + 11 =
11. 11.205 ÷ 5 =
12. 12.47 children stand in rows of 4. How many full rows can they make?
13. 13.65 + 7 =
14. 14.48 + 29 =
15. 15.Half of 54 =
16. 16.120 − 79 =
17. 17.87 × 9 =
18. 18.58 + ? = 100
19. 19.26 + 27 =
20. 20.68 − 34 =
21. 21.You buy a cricket ball for ₹18 and pay with a ₹100 note. How much change do you get, in rupees?
22. 22.32 × 8 =
23. 23.75 × 4 =
24. 24.25% of ₹750 =
25. 25.43 × 7 =
26. 26.Best estimate of 48 × 31? (a) 150 (b) 1500 (c) 15000
27. 27.Best estimate of 727 + 828? (a) 1500 (b) 1300 (c) 1700
28. 28.24² =
29. 29.Half of 120 =
30. 30.87 + 4 =
31. 31.25 + 44 =
32. 32.You buy a kite for ₹12 and a pen for ₹14. You pay with a ₹100 note. How much change do you get, in rupees?
33. 33.8 + ? = 10
34. 34.26 + 28 =
35. 35.A cricket match starts at 2:55 and the first innings ends at 5:45. How many minutes did the innings last?
36. 36.50% of ₹560 =
37. 37.23 + 19 =
38. 38.25% of ₹680 =
39. 39.You buy a storybook for ₹359 and pay with a ₹500 note. How much change do you get, in rupees?
40. 40.33 laddoos are packed in boxes of 4. How many laddoos are left over?

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