Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 817 · 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. 1.528 − 493 =
2. 2.A train leaves at 6:50 and reaches the next city at 9:30. How many minutes is the journey?
3. 3.94 − 46 =
4. 4.81 × 4 =
5. 5.8 + 7 =
6. 6.91 × 5 =
7. 7.28 + 49 =
8. 8.109 − 57 =
9. 9.87 + 27 =
10. 10.248 ÷ 8 =
11. 11.45 × 3 =
12. 12.Double 73 =
13. 13.74 + 44 =
14. 14.45 laddoos are packed in boxes of 8. How many laddoos are left over?
15. 15.50 laddoos are packed in boxes of 8. How many laddoos are left over?
16. 16.319 − 282 =
17. 17.29² =
18. 18.A film starts at 2:20 and ends at 5:15. How many minutes long is the film?
19. 19.You buy a notebook for ₹84 and pay with a ₹100 note. How much change do you get, in rupees?
20. 20.Best estimate of 254 + 302? (a) 400 (b) 600 (c) 800
21. 21.34 + 31 =
22. 22.37 × 8 =
23. 23.212 − 177 =
24. 24.152 ÷ 8 =
25. 25.27 + 9 =
26. 26.Best estimate of 199 + 194? (a) 600 (b) 400 (c) 200
27. 27.Double 71 =
28. 28.25² =
29. 29.96 laddoos are packed in boxes of 9. How many laddoos are left over?
30. 30.62 − 13 =
31. 31.48 ÷ 4 =
32. 32.What is the remainder when 110 is divided by 7?
33. 33.Half of 28 =
34. 34.What is the remainder when 93 is divided by 8?
35. 35.76 × 5 =
36. 36.48 + 3 =
37. 37.Best estimate of 700 + 327? (a) 800 (b) 1200 (c) 1000
38. 38.10% of ₹370 =
39. 39.19 + 21 =
40. 40.78 + 8 =

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