Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 583 · 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. 1.22 × 7 =
2. 2.327 − 278 =
3. 3.86 + 8 =
4. 4.Best estimate of 59 × 23? (a) 1200 (b) 120 (c) 12000
5. 5.99 × 9 =
6. 6.17² =
7. 7.90 − 55 =
8. 8.21 + 22 =
9. 9.18² =
10. 10.5 + 6 =
11. 11.156 ÷ 4 =
12. 12.256 ÷ 8 =
13. 13.You buy a bag of mangoes for ₹431 and pay with a ₹500 note. How much change do you get, in rupees?
14. 14.17 × 6 =
15. 15.29² =
16. 16.72 ÷ 4 =
17. 17.12 + ? = 100
18. 18.You buy a water bottle for ₹43 and pay with a ₹100 note. How much change do you get, in rupees?
19. 19.55 − 21 =
20. 20.176 ÷ 8 =
21. 21.89 + 2 =
22. 22.65 × 4 =
23. 23.Half of 178 =
24. 24.1002 − 984 =
25. 25.88 + 7 =
26. 26.78 + 29 =
27. 27.95 − 72 =
28. 28.20 + 29 =
29. 29.78 + 6 =
30. 30.48 + 64 =
31. 31.236 ÷ 4 =
32. 32.5% of ₹190 =
33. 33.69 − 34 =
34. 34.58 laddoos are packed in boxes of 6. How many laddoos are left over?
35. 35.108 laddoos are packed in boxes of 7. How many laddoos are left over?
36. 36.A train leaves at 8:10 and reaches the next city at 11:05. How many minutes is the journey?
37. 37.Best estimate of 590 + 189? (a) 600 (b) 800 (c) 1000
38. 38.11² =
39. 39.310 − 280 =
40. 40.140 ÷ 4 =

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