Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 286 · 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 92 =
2. 2.A cricket match starts at 7:10 and the first innings ends at 9:40. How many minutes did the innings last?
3. 3.A train leaves at 3:25 and reaches the next city at 6:25. How many minutes is the journey?
4. 4.1 + ? = 10
5. 5.21 × 4 =
6. 6.528 − 497 =
7. 7.13 children stand in rows of 3. How many full rows can they make?
8. 8.55 + 7 =
9. 9.19² =
10. 10.3 + ? = 10
11. 11.43 × 4 =
12. 12.48 + 49 =
13. 13.A film starts at 3:15 and ends at 4:10. How many minutes long is the film?
14. 14.87 + 66 =
15. 15.30 + 32 =
16. 16.13² =
17. 17.304 − 289 =
18. 18.74 + 32 =
19. 19.34 − 29 =
20. 20.82 − 32 =
21. 21.104 ÷ 4 =
22. 22.59 + 62 =
23. 23.7 + 9 =
24. 24.66 + 14 =
25. 25.Best estimate of 871 + 582? (a) 1500 (b) 1300 (c) 1700
26. 26.Best estimate of 77 × 98? (a) 80000 (b) 800 (c) 8000
27. 27.66 × 9 =
28. 28.52 + 37 =
29. 29.6 + 7 =
30. 30.Best estimate of 74 × 66? (a) 4900 (b) 49000 (c) 490
31. 31.You buy a box of crayons for ₹29 and a pen for ₹34. You pay with a ₹100 note. How much change do you get, in rupees?
32. 32.77 − 34 =
33. 33.112 ÷ 4 =
34. 34.252 ÷ 3 =
35. 35.121 − 96 =
36. 36.19 + 6 =
37. 37.Double 48 =
38. 38.76 + ? = 100
39. 39.28 + 30 =
40. 40.1017 − 975 =

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