Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 975 · 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. 1.5 + ? = 10
2. 2.A cricket match starts at 5:00 and the first innings ends at 7:10. How many minutes did the innings last?
3. 3.49 × 4 =
4. 4.52 − 41 =
5. 5.28 + ? = 100
6. 6.8 + ? = 10
7. 7.51 − 29 =
8. 8.A cricket match starts at 2:40 and the first innings ends at 4:00. How many minutes did the innings last?
9. 9.Best estimate of 878 + 155? (a) 900 (b) 1100 (c) 1300
10. 10.26 + 22 =
11. 11.You buy a notebook for ₹111 and pay with a ₹500 note. How much change do you get, in rupees?
12. 12.32 + ? = 100
13. 13.127 laddoos are packed in boxes of 9. How many laddoos are left over?
14. 14.Best estimate of 73 × 43? (a) 2800 (b) 28000 (c) 280
15. 15.138 ÷ 3 =
16. 16.80 + ? = 100
17. 17.A cricket match starts at 3:05 and the first innings ends at 4:05. How many minutes did the innings last?
18. 18.54 − 19 =
19. 19.43 × 3 =
20. 20.86 + 5 =
21. 21.78 − 56 =
22. 22.50 + 21 =
23. 23.731 + 99 =
24. 24.You buy a notebook for ₹84 and pay with a ₹100 note. How much change do you get, in rupees?
25. 25.78 − 9 =
26. 26.101 − 29 =
27. 27.89 + 33 =
28. 28.14² =
29. 29.93 children stand in rows of 7. How many full rows can they make?
30. 30.49 + 7 =
31. 31.A train leaves at 3:00 and reaches the next city at 4:10. How many minutes is the journey?
32. 32.1010 − 976 =
33. 33.76 + 5 =
34. 34.15² =
35. 35.564 ÷ 6 =
36. 36.228 ÷ 3 =
37. 37.You buy a bag of mangoes for ₹21 and a pen for ₹26. You pay with a ₹100 note. How much change do you get, in rupees?
38. 38.29 + 28 =
39. 39.17² =
40. 40.26 × 5 =

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