Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 250 · 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 box of crayons for ₹28 and a pen for ₹30. You pay with a ₹100 note. How much change do you get, in rupees?
2. 2.Double 84 =
3. 3.5% of ₹530 =
4. 4.Half of 66 =
5. 5.Half of 54 =
6. 6.14 + 16 =
7. 7.96 ÷ 8 =
8. 8.A film starts at 2:40 and ends at 5:15. How many minutes long is the film?
9. 9.Best estimate of 685 + 552? (a) 1300 (b) 1500 (c) 1100
10. 10.38 × 8 =
11. 11.219 − 179 =
12. 12.29 × 8 =
13. 13.32 + ? = 100
14. 14.50 + 16 =
15. 15.101 − 76 =
16. 16.51 + ? = 100
17. 17.8 + ? = 10
18. 18.29² =
19. 19.48 + 4 =
20. 20.What is the remainder when 35 is divided by 6?
21. 21.22² =
22. 22.172 ÷ 4 =
23. 23.41 × 3 =
24. 24.282 + 99 =
25. 25.Best estimate of 245 + 415? (a) 600 (b) 800 (c) 400
26. 26.Double 51 =
27. 27.A cricket match starts at 1:55 and the first innings ends at 4:15. How many minutes did the innings last?
28. 28.13² =
29. 29.You start your homework at 4:35 and finish at 5:30. How many minutes did you work?
30. 30.161 ÷ 7 =
31. 31.You buy a cricket ball for ₹38 and a pen for ₹37. You pay with a ₹100 note. How much change do you get, in rupees?
32. 32.14 × 3 =
33. 33.10% of ₹640 =
34. 34.29 children stand in rows of 6. How many full rows can they make?
35. 35.90 − 54 =
36. 36.Double 41 =
37. 37.A train leaves at 4:45 and reaches the next city at 5:50. How many minutes is the journey?
38. 38.You buy a notebook for ₹16 and a pen for ₹11. You pay with a ₹100 note. How much change do you get, in rupees?
39. 39.34 + 19 =
40. 40.18 × 8 =

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