Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 132 · 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. 1.36 × 8 =
2. 2.15 × 8 =
3. 3.72 − 9 =
4. 4.89 × 8 =
5. 5.16 × 8 =
6. 6.126 ÷ 9 =
7. 7.5 + ? = 10
8. 8.144 ÷ 8 =
9. 9.27² =
10. 10.97 − 63 =
11. 11.96 − 79 =
12. 12.Best estimate of 686 + 166? (a) 900 (b) 1100 (c) 700
13. 13.89 − 70 =
14. 14.38 − 9 =
15. 15.A cricket match starts at 7:45 and the first innings ends at 8:10. How many minutes did the innings last?
16. 16.72 ÷ 4 =
17. 17.204 ÷ 4 =
18. 18.41 × 3 =
19. 19.56 + 29 =
20. 20.23 + 64 =
21. 21.18 + 3 =
22. 22.106 − 67 =
23. 23.What is the remainder when 62 is divided by 9?
24. 24.63 + 81 =
25. 25.41 + 29 =
26. 26.82 − 29 =
27. 27.81 + ? = 100
28. 28.What is the remainder when 93 is divided by 8?
29. 29.74 + 31 =
30. 30.98 − 65 =
31. 31.You buy a bag of mangoes for ₹156 and pay with a ₹500 note. How much change do you get, in rupees?
32. 32.9 + 11 =
33. 33.72 + ? = 100
34. 34.Best estimate of 361 + 549? (a) 900 (b) 1100 (c) 700
35. 35.164 ÷ 4 =
36. 36.128 ÷ 8 =
37. 37.You buy a notebook for ₹18 and a pen for ₹43. You pay with a ₹100 note. How much change do you get, in rupees?
38. 38.You buy a cricket ball for ₹25 and a pen for ₹44. You pay with a ₹100 note. How much change do you get, in rupees?
39. 39.98 − 35 =
40. 40.96 ÷ 8 =

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