Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 631 · 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. 1.32 + ? = 100
2. 2.2 + ? = 10
3. 3.15 × 4 =
4. 4.16 × 3 =
5. 5.25% of ₹630 =
6. 6.You buy a bag of mangoes for ₹54 and pay with a ₹100 note. How much change do you get, in rupees?
7. 7.Double 76 =
8. 8.168 ÷ 4 =
9. 9.74 + ? = 100
10. 10.You buy a storybook for ₹11 and pay with a ₹100 note. How much change do you get, in rupees?
11. 11.585 ÷ 9 =
12. 12.What is the remainder when 22 is divided by 3?
13. 13.62 + ? = 100
14. 14.16 + 9 =
15. 15.20 × 4 =
16. 16.39 + 4 =
17. 17.72 × 4 =
18. 18.624 ÷ 8 =
19. 19.What is the remainder when 47 is divided by 6?
20. 20.Best estimate of 62 × 74? (a) 42000 (b) 4200 (c) 420
21. 21.A cricket match starts at 3:10 and the first innings ends at 5:30. How many minutes did the innings last?
22. 22.61 − 9 =
23. 23.513 − 477 =
24. 24.Best estimate of 81 × 50? (a) 400 (b) 40000 (c) 4000
25. 25.37 − 9 =
26. 26.What is the remainder when 62 is divided by 7?
27. 27.30 − 9 =
28. 28.35 × 8 =
29. 29.You buy a cricket ball for ₹86 and pay with a ₹100 note. How much change do you get, in rupees?
30. 30.Double 35 =
31. 31.184 ÷ 4 =
32. 32.18 × 7 =
33. 33.54 + 19 =
34. 34.87 × 3 =
35. 35.11² =
36. 36.You buy a pencil box for ₹16 and a pen for ₹43. You pay with a ₹100 note. How much change do you get, in rupees?
37. 37.24 + ? = 100
38. 38.A train leaves at 1:25 and reaches the next city at 2:30. How many minutes is the journey?
39. 39.71 − 29 =
40. 40.22² =

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