Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 183 · 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. 1.46 + 5 =
2. 2.97 − 74 =
3. 3.73 × 6 =
4. 4.65 + 84 =
5. 5.25 × 4 =
6. 6.112 ÷ 8 =
7. 7.17 + 5 =
8. 8.A train leaves at 8:00 and reaches the next city at 10:50. How many minutes is the journey?
9. 9.47 laddoos are packed in boxes of 3. How many laddoos are left over?
10. 10.3 + ? = 10
11. 11.24 + 25 =
12. 12.11² =
13. 13.198 ÷ 9 =
14. 14.34 + 29 =
15. 15.88 ÷ 4 =
16. 16.514 − 489 =
17. 17.You buy a storybook for ₹45 and pay with a ₹100 note. How much change do you get, in rupees?
18. 18.14 + 15 =
19. 19.Double 88 =
20. 20.9 + 8 =
21. 21.You buy a cricket ball for ₹18 and pay with a ₹100 note. How much change do you get, in rupees?
22. 22.25% of ₹750 =
23. 23.You buy a notebook for ₹35 and a pen for ₹14. You pay with a ₹100 note. How much change do you get, in rupees?
24. 24.Double 83 =
25. 25.Best estimate of 652 + 632? (a) 1100 (b) 1500 (c) 1300
26. 26.You start your homework at 7:35 and finish at 8:55. How many minutes did you work?
27. 27.69 − 29 =
28. 28.144 ÷ 3 =
29. 29.276 ÷ 4 =
30. 30.85 − 66 =
31. 31.18 + 17 =
32. 32.18² =
33. 33.Double 81 =
34. 34.26 + 53 =
35. 35.155 ÷ 5 =
36. 36.783 ÷ 9 =
37. 37.152 ÷ 8 =
38. 38.You buy a cricket ball for ₹113 and pay with a ₹500 note. How much change do you get, in rupees?
39. 39.What is the remainder when 42 is divided by 5?
40. 40.322 − 279 =

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