Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 274 · 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.Half of 182 =
2. 2.66 + 8 =
3. 3.528 − 475 =
4. 4.What is the remainder when 74 is divided by 7?
5. 5.29 + 9 =
6. 6.78 + ? = 100
7. 7.55 − 35 =
8. 8.Double 85 =
9. 9.You buy a bag of mangoes for ₹454 and pay with a ₹500 note. How much change do you get, in rupees?
10. 10.53 children stand in rows of 8. How many full rows can they make?
11. 11.232 ÷ 4 =
12. 12.83 − 56 =
13. 13.23 × 8 =
14. 14.35 × 8 =
15. 15.123 ÷ 3 =
16. 16.37 × 4 =
17. 17.Best estimate of 273 + 546? (a) 600 (b) 1000 (c) 800
18. 18.Half of 88 =
19. 19.24 + 9 =
20. 20.Best estimate of 21 × 37? (a) 800 (b) 8000 (c) 80
21. 21.200 ÷ 8 =
22. 22.You buy a bag of mangoes for ₹140 and pay with a ₹500 note. How much change do you get, in rupees?
23. 23.266 + 99 =
24. 24.5% of ₹110 =
25. 25.104 ÷ 8 =
26. 26.Double 55 =
27. 27.223 − 195 =
28. 28.14 × 4 =
29. 29.15 + 19 =
30. 30.7 + ? = 10
31. 31.You buy a water bottle for ₹22 and pay with a ₹100 note. How much change do you get, in rupees?
32. 32.85 − 41 =
33. 33.19 × 8 =
34. 34.50% of ₹370 =
35. 35.15² =
36. 36.216 ÷ 6 =
37. 37.A train leaves at 8:35 and reaches the next city at 9:15. How many minutes is the journey?
38. 38.25% of ₹870 =
39. 39.15 + 9 =
40. 40.A film starts at 4:45 and ends at 5:40. How many minutes long is the film?

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