Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 982 · 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. 1.7 + 8 =
2. 2.10% of ₹110 =
3. 3.36 + 9 =
4. 4.A cricket match starts at 5:45 and the first innings ends at 8:00. How many minutes did the innings last?
5. 5.192 ÷ 4 =
6. 6.You buy a pencil box for ₹45 and a pen for ₹16. You pay with a ₹100 note. How much change do you get, in rupees?
7. 7.16 + 15 =
8. 8.Best estimate of 148 + 714? (a) 600 (b) 1000 (c) 800
9. 9.25% of ₹790 =
10. 10.You buy a kite for ₹79 and pay with a ₹100 note. How much change do you get, in rupees?
11. 11.24 + 23 =
12. 12.50% of ₹270 =
13. 13.17 + 9 =
14. 14.Best estimate of 86 × 98? (a) 9000 (b) 900 (c) 90000
15. 15.16 + 17 =
16. 16.500 + 99 =
17. 17.10% of ₹180 =
18. 18.You buy a kite for ₹30 and pay with a ₹100 note. How much change do you get, in rupees?
19. 19.25 + ? = 100
20. 20.14 + 16 =
21. 21.19 − 9 =
22. 22.176 ÷ 4 =
23. 23.18 × 5 =
24. 24.52 − 21 =
25. 25.33 × 4 =
26. 26.63 − 32 =
27. 27.29 + 7 =
28. 28.10% of ₹540 =
29. 29.24 + 25 =
30. 30.You buy a storybook for ₹415 and pay with a ₹500 note. How much change do you get, in rupees?
31. 31.36 − 29 =
32. 32.77 − 29 =
33. 33.98 − 83 =
34. 34.30 × 8 =
35. 35.25% of ₹460 =
36. 36.224 ÷ 7 =
37. 37.25% of ₹480 =
38. 38.A train leaves at 8:55 and reaches the next city at 12:10. How many minutes is the journey?
39. 39.326 − 275 =
40. 40.Half of 84 =

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