Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 398 · 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. 1.612 ÷ 9 =
2. 2.A train leaves at 3:40 and reaches the next city at 5:20. How many minutes is the journey?
3. 3.Best estimate of 36 × 26? (a) 12000 (b) 120 (c) 1200
4. 4.14 + ? = 100
5. 5.You buy a pencil box for ₹17 and a pen for ₹12. You pay with a ₹100 note. How much change do you get, in rupees?
6. 6.30 × 4 =
7. 7.63 − 51 =
8. 8.15 + 8 =
9. 9.1 + ? = 10
10. 10.51 + ? = 100
11. 11.91 − 36 =
12. 12.59 + ? = 100
13. 13.Best estimate of 429 + 214? (a) 400 (b) 800 (c) 600
14. 14.59 + 8 =
15. 15.A train leaves at 2:50 and reaches the next city at 5:15. How many minutes is the journey?
16. 16.26 children stand in rows of 3. How many full rows can they make?
17. 17.78 + ? = 100
18. 18.A film starts at 4:55 and ends at 7:55. How many minutes long is the film?
19. 19.Best estimate of 639 + 190? (a) 600 (b) 800 (c) 1000
20. 20.21² =
21. 21.48 ÷ 4 =
22. 22.17² =
23. 23.75 + 45 =
24. 24.1012 − 977 =
25. 25.41 × 6 =
26. 26.32 + ? = 100
27. 27.You buy a bag of mangoes for ₹37 and a pen for ₹20. You pay with a ₹100 note. How much change do you get, in rupees?
28. 28.You start your homework at 6:15 and finish at 8:40. How many minutes did you work?
29. 29.16 + 7 =
30. 30.Half of 28 =
31. 31.125 − 81 =
32. 32.51 + 29 =
33. 33.You buy a cricket ball for ₹126 and pay with a ₹500 note. How much change do you get, in rupees?
34. 34.10% of ₹460 =
35. 35.Double 33 =
36. 36.108 − 77 =
37. 37.25 + 24 =
38. 38.192 ÷ 4 =
39. 39.104 ÷ 4 =
40. 40.Half of 124 =

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