Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 858 · 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. 1.52 − 9 =
2. 2.78 + 4 =
3. 3.86 laddoos are packed in boxes of 7. How many laddoos are left over?
4. 4.A cricket match starts at 3:35 and the first innings ends at 5:55. How many minutes did the innings last?
5. 5.A train leaves at 5:00 and reaches the next city at 7:50. How many minutes is the journey?
6. 6.Double 68 =
7. 7.You buy a kite for ₹29 and a pen for ₹42. You pay with a ₹100 note. How much change do you get, in rupees?
8. 8.Double 56 =
9. 9.Best estimate of 574 + 414? (a) 1200 (b) 1000 (c) 800
10. 10.Half of 34 =
11. 11.74 − 28 =
12. 12.272 ÷ 8 =
13. 13.A film starts at 6:25 and ends at 8:00. How many minutes long is the film?
14. 14.1020 − 982 =
15. 15.5% of ₹150 =
16. 16.59 × 9 =
17. 17.96 ÷ 4 =
18. 18.Best estimate of 174 + 310? (a) 300 (b) 700 (c) 500
19. 19.Best estimate of 24 × 46? (a) 10000 (b) 100 (c) 1000
20. 20.22 + 21 =
21. 21.Half of 176 =
22. 22.104 ÷ 4 =
23. 23.511 − 478 =
24. 24.160 ÷ 8 =
25. 25.80 − 21 =
26. 26.Best estimate of 74 × 56? (a) 42000 (b) 4200 (c) 420
27. 27.29 children stand in rows of 6. How many full rows can they make?
28. 28.81 − 29 =
29. 29.86 + 7 =
30. 30.31 × 4 =
31. 31.51 + 9 =
32. 32.Best estimate of 29 × 63? (a) 1800 (b) 180 (c) 18000
33. 33.220 ÷ 4 =
34. 34.Half of 134 =
35. 35.21² =
36. 36.5% of ₹490 =
37. 37.81 + 38 =
38. 38.You buy a storybook for ₹18 and a pen for ₹13. You pay with a ₹100 note. How much change do you get, in rupees?
39. 39.21 + 9 =
40. 40.28 + 5 =

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