Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 385 · 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.You buy a bag of mangoes for ₹346 and pay with a ₹500 note. How much change do you get, in rupees?
2. 2.240 ÷ 8 =
3. 3.Best estimate of 79 × 67? (a) 560 (b) 56000 (c) 5600
4. 4.26 + 6 =
5. 5.70 − 51 =
6. 6.53 × 9 =
7. 7.10% of ₹620 =
8. 8.273 ÷ 7 =
9. 9.78 − 59 =
10. 10.200 ÷ 8 =
11. 11.51 × 4 =
12. 12.You buy a box of crayons for ₹49 and pay with a ₹100 note. How much change do you get, in rupees?
13. 13.A film starts at 5:50 and ends at 7:25. How many minutes long is the film?
14. 14.104 − 95 =
15. 15.Best estimate of 68 × 56? (a) 4200 (b) 420 (c) 42000
16. 16.Half of 154 =
17. 17.37 × 4 =
18. 18.219 ÷ 3 =
19. 19.34 + 23 =
20. 20.76 + 16 =
21. 21.95 − 57 =
22. 22.13² =
23. 23.27² =
24. 24.456 ÷ 6 =
25. 25.144 ÷ 4 =
26. 26.You buy a bag of mangoes for ₹44 and pay with a ₹100 note. How much change do you get, in rupees?
27. 27.95 − 26 =
28. 28.168 ÷ 8 =
29. 29.85 × 7 =
30. 30.Half of 166 =
31. 31.304 − 286 =
32. 32.What is the remainder when 61 is divided by 5?
33. 33.55 + ? = 100
34. 34.228 ÷ 4 =
35. 35.A cricket match starts at 7:55 and the first innings ends at 9:10. How many minutes did the innings last?
36. 36.74 + ? = 100
37. 37.594 + 99 =
38. 38.38 × 4 =
39. 39.27 + 28 =
40. 40.2 + ? = 10

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