Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 769 · 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.Double 18 =
2. 2.45 + 82 =
3. 3.A cricket match starts at 8:50 and the first innings ends at 11:15. How many minutes did the innings last?
4. 4.Best estimate of 121 + 227? (a) 100 (b) 300 (c) 500
5. 5.9 + ? = 10
6. 6.70 − 26 =
7. 7.521 − 477 =
8. 8.1 + ? = 10
9. 9.41 × 9 =
10. 10.83 − 61 =
11. 11.26² =
12. 12.What is the remainder when 49 is divided by 6?
13. 13.85 + 6 =
14. 14.112 ÷ 4 =
15. 15.104 ÷ 4 =
16. 16.A train leaves at 8:40 and reaches the next city at 10:55. How many minutes is the journey?
17. 17.27 + 29 =
18. 18.A cricket match starts at 2:40 and the first innings ends at 5:20. How many minutes did the innings last?
19. 19.73 − 25 =
20. 20.You buy a cricket ball for ₹45 and pay with a ₹100 note. How much change do you get, in rupees?
21. 21.45 + 24 =
22. 22.15 + 16 =
23. 23.You buy a water bottle for ₹82 and pay with a ₹100 note. How much change do you get, in rupees?
24. 24.You buy a water bottle for ₹160 and pay with a ₹500 note. How much change do you get, in rupees?
25. 25.40 + 86 =
26. 26.50% of ₹440 =
27. 27.You buy a cricket ball for ₹48 and pay with a ₹100 note. How much change do you get, in rupees?
28. 28.Best estimate of 728 + 186? (a) 900 (b) 1100 (c) 700
29. 29.301 − 279 =
30. 30.27 + ? = 100
31. 31.56 − 22 =
32. 32.Best estimate of 54 × 87? (a) 450 (b) 4500 (c) 45000
33. 33.Best estimate of 396 + 761? (a) 1000 (b) 1200 (c) 1400
34. 34.23² =
35. 35.65 + 9 =
36. 36.248 ÷ 8 =
37. 37.55 × 8 =
38. 38.36 × 8 =
39. 39.94 × 4 =
40. 40.A train leaves at 3:55 and reaches the next city at 5:35. How many minutes is the journey?

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