Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 904 · 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. 1.26 × 8 =
2. 2.576 ÷ 9 =
3. 3.27² =
4. 4.25% of ₹560 =
5. 5.6 + 8 =
6. 6.72 + 19 =
7. 7.You buy a kite for ₹18 and pay with a ₹100 note. How much change do you get, in rupees?
8. 8.Double 69 =
9. 9.Best estimate of 661 + 258? (a) 800 (b) 1000 (c) 1200
10. 10.58 × 4 =
11. 11.23 + 29 =
12. 12.19² =
13. 13.You buy a kite for ₹140 and pay with a ₹500 note. How much change do you get, in rupees?
14. 14.22² =
15. 15.45 + 6 =
16. 16.Half of 130 =
17. 17.5% of ₹180 =
18. 18.13² =
19. 19.12 + 11 =
20. 20.66 − 27 =
21. 21.91 − 29 =
22. 22.25% of ₹310 =
23. 23.83 − 39 =
24. 24.72 ÷ 4 =
25. 25.26 + 17 =
26. 26.9 + 8 =
27. 27.You buy a cricket ball for ₹32 and a pen for ₹32. You pay with a ₹100 note. How much change do you get, in rupees?
28. 28.27 + 9 =
29. 29.26² =
30. 30.28 + 81 =
31. 31.2 + ? = 10
32. 32.172 ÷ 4 =
33. 33.A cricket match starts at 6:40 and the first innings ends at 9:15. How many minutes did the innings last?
34. 34.168 ÷ 8 =
35. 35.A cricket match starts at 8:05 and the first innings ends at 11:00. How many minutes did the innings last?
36. 36.47 + 38 =
37. 37.25% of ₹820 =
38. 38.You buy a kite for ₹144 and pay with a ₹500 note. How much change do you get, in rupees?
39. 39.38 + 3 =
40. 40.You buy a pencil box for ₹467 and pay with a ₹500 note. How much change do you get, in rupees?

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