Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 578 · 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.Best estimate of 17 × 14? (a) 200 (b) 20 (c) 2000
2. 2.16 + 6 =
3. 3.23² =
4. 4.A film starts at 6:00 and ends at 7:10. How many minutes long is the film?
5. 5.25 × 4 =
6. 6.81 ÷ 3 =
7. 7.3 + ? = 10
8. 8.20 × 4 =
9. 9.32 × 8 =
10. 10.27 + 29 =
11. 11.87 + 4 =
12. 12.19 × 5 =
13. 13.Double 86 =
14. 14.582 + 99 =
15. 15.87 × 4 =
16. 16.219 − 196 =
17. 17.You buy a pencil box for ₹62 and pay with a ₹100 note. How much change do you get, in rupees?
18. 18.504 − 490 =
19. 19.You buy a water bottle for ₹38 and a pen for ₹17. You pay with a ₹100 note. How much change do you get, in rupees?
20. 20.5% of ₹720 =
21. 21.What is the remainder when 74 is divided by 7?
22. 22.34 × 8 =
23. 23.33 + ? = 100
24. 24.190 ÷ 5 =
25. 25.38 × 8 =
26. 26.59 − 37 =
27. 27.17 × 8 =
28. 28.59 laddoos are packed in boxes of 6. How many laddoos are left over?
29. 29.405 ÷ 5 =
30. 30.58 − 45 =
31. 31.229 − 196 =
32. 32.35 laddoos are packed in boxes of 4. How many laddoos are left over?
33. 33.54 − 42 =
34. 34.You start your homework at 6:50 and finish at 10:10. How many minutes did you work?
35. 35.10% of ₹240 =
36. 36.213 − 196 =
37. 37.9 + 10 =
38. 38.503 − 490 =
39. 39.15² =
40. 40.6 + 5 =

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