Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 351 · 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. 1.192 ÷ 3 =
2. 2.34 laddoos are packed in boxes of 3. How many laddoos are left over?
3. 3.41 × 6 =
4. 4.502 − 493 =
5. 5.59 + 19 =
6. 6.43 × 4 =
7. 7.Best estimate of 43 × 48? (a) 20000 (b) 200 (c) 2000
8. 8.You start your homework at 1:10 and finish at 4:10. How many minutes did you work?
9. 9.72 + ? = 100
10. 10.Half of 78 =
11. 11.10% of ₹170 =
12. 12.50% of ₹40 =
13. 13.2 + ? = 10
14. 14.14 + 15 =
15. 15.92 − 59 =
16. 16.You buy a water bottle for ₹45 and a pen for ₹23. You pay with a ₹100 note. How much change do you get, in rupees?
17. 17.Half of 178 =
18. 18.25 + 26 =
19. 19.17² =
20. 20.You buy a water bottle for ₹32 and a pen for ₹31. You pay with a ₹100 note. How much change do you get, in rupees?
21. 21.6 + 8 =
22. 22.You buy a storybook for ₹256 and pay with a ₹500 note. How much change do you get, in rupees?
23. 23.Best estimate of 89 × 73? (a) 6300 (b) 63000 (c) 630
24. 24.65 − 32 =
25. 25.208 ÷ 8 =
26. 26.5% of ₹410 =
27. 27.71 − 17 =
28. 28.You buy a bag of mangoes for ₹238 and pay with a ₹500 note. How much change do you get, in rupees?
29. 29.85 + 7 =
30. 30.77 + 4 =
31. 31.87 + 5 =
32. 32.104 ÷ 4 =
33. 33.32 × 8 =
34. 34.Half of 36 =
35. 35.A train leaves at 3:20 and reaches the next city at 6:10. How many minutes is the journey?
36. 36.1 + ? = 10
37. 37.Double 57 =
38. 38.9 + 9 =
39. 39.30 × 8 =
40. 40.26² =

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