Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 428 · 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. 1.27 + 58 =
2. 2.2 + ? = 10
3. 3.33 + 62 =
4. 4.76 − 48 =
5. 5.6 + 8 =
6. 6.45 + 7 =
7. 7.70 + 29 =
8. 8.50% of ₹380 =
9. 9.A film starts at 4:00 and ends at 6:25. How many minutes long is the film?
10. 10.Half of 160 =
11. 11.73 + ? = 100
12. 12.Best estimate of 18 × 93? (a) 180 (b) 18000 (c) 1800
13. 13.75 × 4 =
14. 14.19² =
15. 15.48 + ? = 100
16. 16.A cricket match starts at 1:35 and the first innings ends at 3:45. How many minutes did the innings last?
17. 17.61 children stand in rows of 4. How many full rows can they make?
18. 18.39 × 3 =
19. 19.26² =
20. 20.124 ÷ 4 =
21. 21.16² =
22. 22.528 ÷ 8 =
23. 23.84 − 45 =
24. 24.A cricket match starts at 3:05 and the first innings ends at 5:00. How many minutes did the innings last?
25. 25.49 + 4 =
26. 26.5% of ₹250 =
27. 27.A film starts at 7:50 and ends at 9:20. How many minutes long is the film?
28. 28.288 ÷ 8 =
29. 29.10% of ₹160 =
30. 30.22 + 24 =
31. 31.10% of ₹480 =
32. 32.102 − 80 =
33. 33.33 + ? = 100
34. 34.169 − 99 =
35. 35.71 + ? = 100
36. 36.You buy a pencil box for ₹34 and pay with a ₹100 note. How much change do you get, in rupees?
37. 37.You buy a bag of mangoes for ₹11 and a pen for ₹26. You pay with a ₹100 note. How much change do you get, in rupees?
38. 38.14² =
39. 39.522 − 481 =
40. 40.176 ÷ 8 =

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