Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 277 · 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.What is the remainder when 93 is divided by 8?
2. 2.280 ÷ 8 =
3. 3.54 − 12 =
4. 4.26² =
5. 5.28 + 27 =
6. 6.You buy a box of crayons for ₹56 and pay with a ₹100 note. How much change do you get, in rupees?
7. 7.140 ÷ 4 =
8. 8.73 − 29 =
9. 9.40 × 4 =
10. 10.29 − 9 =
11. 11.230 − 196 =
12. 12.Best estimate of 24 × 68? (a) 140 (b) 1400 (c) 14000
13. 13.53 − 39 =
14. 14.You buy a storybook for ₹15 and a pen for ₹13. You pay with a ₹100 note. How much change do you get, in rupees?
15. 15.312 ÷ 8 =
16. 16.49 + 59 =
17. 17.39 + 16 =
18. 18.Best estimate of 31 × 48? (a) 15000 (b) 1500 (c) 150
19. 19.13² =
20. 20.79 − 31 =
21. 21.Best estimate of 22 × 29? (a) 600 (b) 60 (c) 6000
22. 22.11 + 12 =
23. 23.A film starts at 2:05 and ends at 2:50. How many minutes long is the film?
24. 24.27 + 9 =
25. 25.79 × 7 =
26. 26.24 + 26 =
27. 27.Best estimate of 38 × 54? (a) 200 (b) 2000 (c) 20000
28. 28.40 + 55 =
29. 29.51 laddoos are packed in boxes of 8. How many laddoos are left over?
30. 30.80 ÷ 4 =
31. 31.6 + 5 =
32. 32.You buy a storybook for ₹426 and pay with a ₹500 note. How much change do you get, in rupees?
33. 33.Double 63 =
34. 34.50% of ₹370 =
35. 35.1010 − 985 =
36. 36.63 − 51 =
37. 37.A cricket match starts at 4:55 and the first innings ends at 6:25. How many minutes did the innings last?
38. 38.Best estimate of 364 + 545? (a) 900 (b) 1100 (c) 700
39. 39.Half of 40 =
40. 40.3 + ? = 10

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