Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 887 · 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.You buy a pencil box for ₹34 and pay with a ₹100 note. How much change do you get, in rupees?
2. 2.94 − 60 =
3. 3.124 children stand in rows of 8. How many full rows can they make?
4. 4.2 + ? = 10
5. 5.93 × 6 =
6. 6.45 × 3 =
7. 7.You buy a bag of mangoes for ₹64 and pay with a ₹100 note. How much change do you get, in rupees?
8. 8.99 children stand in rows of 7. How many full rows can they make?
9. 9.1012 − 975 =
10. 10.47 − 29 =
11. 11.50 + 68 =
12. 12.49 + 45 =
13. 13.5% of ₹250 =
14. 14.You buy a box of crayons for ₹43 and a pen for ₹32. You pay with a ₹100 note. How much change do you get, in rupees?
15. 15.58 − 29 =
16. 16.8 + 7 =
17. 17.18² =
18. 18.164 ÷ 4 =
19. 19.63 − 35 =
20. 20.Best estimate of 37 × 51? (a) 200 (b) 2000 (c) 20000
21. 21.128 ÷ 8 =
22. 22.Double 38 =
23. 23.104 − 75 =
24. 24.38 × 8 =
25. 25.Best estimate of 374 + 178? (a) 600 (b) 800 (c) 400
26. 26.You buy a cricket ball for ₹493 and pay with a ₹500 note. How much change do you get, in rupees?
27. 27.85 − 74 =
28. 28.85 + 58 =
29. 29.50% of ₹90 =
30. 30.30 + 31 =
31. 31.15² =
32. 32.25² =
33. 33.231 ÷ 3 =
34. 34.73 − 47 =
35. 35.A film starts at 5:45 and ends at 6:25. How many minutes long is the film?
36. 36.256 ÷ 8 =
37. 37.You buy a box of crayons for ₹33 and pay with a ₹100 note. How much change do you get, in rupees?
38. 38.63 × 4 =
39. 39.A train leaves at 6:40 and reaches the next city at 9:35. How many minutes is the journey?
40. 40.89 + 75 =

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