Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 98 · 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 79 × 33? (a) 24000 (b) 2400 (c) 240
2. 2.74 children stand in rows of 8. How many full rows can they make?
3. 3.31 children stand in rows of 4. How many full rows can they make?
4. 4.You buy a cricket ball for ₹46 and pay with a ₹100 note. How much change do you get, in rupees?
5. 5.Best estimate of 76 × 59? (a) 4800 (b) 480 (c) 48000
6. 6.A train leaves at 7:00 and reaches the next city at 8:55. How many minutes is the journey?
7. 7.307 − 283 =
8. 8.Double 34 =
9. 9.37 × 7 =
10. 10.75 + ? = 100
11. 11.Double 52 =
12. 12.65 × 4 =
13. 13.What is the remainder when 29 is divided by 4?
14. 14.13² =
15. 15.Double 71 =
16. 16.44 children stand in rows of 3. How many full rows can they make?
17. 17.You buy a cricket ball for ₹78 and pay with a ₹100 note. How much change do you get, in rupees?
18. 18.15 + 6 =
19. 19.25% of ₹170 =
20. 20.80 + 16 =
21. 21.104 − 96 =
22. 22.89 − 29 =
23. 23.62 − 44 =
24. 24.15 + 7 =
25. 25.50% of ₹290 =
26. 26.42 × 7 =
27. 27.77 − 14 =
28. 28.99 − 76 =
29. 29.57 + ? = 100
30. 30.105 − 61 =
31. 31.16 × 4 =
32. 32.152 ÷ 8 =
33. 33.You buy a kite for ₹58 and pay with a ₹100 note. How much change do you get, in rupees?
34. 34.15 + 19 =
35. 35.224 ÷ 7 =
36. 36.209 − 183 =
37. 37.13 + 12 =
38. 38.Best estimate of 87 × 64? (a) 5400 (b) 54000 (c) 540
39. 39.279 ÷ 9 =
40. 40.Best estimate of 47 × 26? (a) 150 (b) 15000 (c) 1500

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