Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 639 · 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 + 7 =
2. 2.4 + ? = 10
3. 3.53 + ? = 100
4. 4.5% of ₹290 =
5. 5.23² =
6. 6.240 ÷ 8 =
7. 7.37 + 72 =
8. 8.A train leaves at 2:55 and reaches the next city at 5:50. How many minutes is the journey?
9. 9.14² =
10. 10.62 × 6 =
11. 11.19² =
12. 12.252 ÷ 6 =
13. 13.314 − 298 =
14. 14.57 − 43 =
15. 15.61 − 13 =
16. 16.17 × 4 =
17. 17.75 + ? = 100
18. 18.31 + 73 =
19. 19.96 ÷ 4 =
20. 20.57 + 6 =
21. 21.82 − 9 =
22. 22.13² =
23. 23.71 − 41 =
24. 24.62 − 38 =
25. 25.19 + 18 =
26. 26.5 + 6 =
27. 27.Best estimate of 97 × 94? (a) 900 (b) 9000 (c) 90000
28. 28.You buy a storybook for ₹351 and pay with a ₹500 note. How much change do you get, in rupees?
29. 29.A film starts at 7:45 and ends at 10:05. How many minutes long is the film?
30. 30.87 + 9 =
31. 31.You buy a bag of mangoes for ₹35 and a pen for ₹23. You pay with a ₹100 note. How much change do you get, in rupees?
32. 32.51 ÷ 3 =
33. 33.100 ÷ 4 =
34. 34.Double 46 =
35. 35.What is the remainder when 29 is divided by 4?
36. 36.65 × 9 =
37. 37.22² =
38. 38.Half of 48 =
39. 39.Best estimate of 234 + 376? (a) 600 (b) 400 (c) 800
40. 40.188 ÷ 4 =

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