Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 235 · 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. 1.7 + ? = 10
2. 2.100 − 29 =
3. 3.84 − 29 =
4. 4.You buy a kite for ₹33 and a pen for ₹24. You pay with a ₹100 note. How much change do you get, in rupees?
5. 5.1010 − 984 =
6. 6.528 ÷ 6 =
7. 7.38 + ? = 100
8. 8.155 ÷ 5 =
9. 9.Best estimate of 91 × 96? (a) 9000 (b) 900 (c) 90000
10. 10.10% of ₹150 =
11. 11.Half of 54 =
12. 12.31 + ? = 100
13. 13.108 ÷ 4 =
14. 14.58 + 9 =
15. 15.11² =
16. 16.232 ÷ 4 =
17. 17.29² =
18. 18.50 − 9 =
19. 19.6 + ? = 10
20. 20.4 + ? = 10
21. 21.8 + 6 =
22. 22.20 + 19 =
23. 23.204 ÷ 4 =
24. 24.18 + 29 =
25. 25.Best estimate of 658 + 300? (a) 1200 (b) 800 (c) 1000
26. 26.116 ÷ 4 =
27. 27.What is the remainder when 22 is divided by 4?
28. 28.21 + 20 =
29. 29.43 children stand in rows of 3. How many full rows can they make?
30. 30.Half of 158 =
31. 31.You buy a kite for ₹37 and a pen for ₹18. You pay with a ₹100 note. How much change do you get, in rupees?
32. 32.34 × 5 =
33. 33.A train leaves at 6:00 and reaches the next city at 8:15. How many minutes is the journey?
34. 34.84 ÷ 4 =
35. 35.13² =
36. 36.72 ÷ 4 =
37. 37.83 × 3 =
38. 38.5% of ₹620 =
39. 39.23² =
40. 40.68 + 8 =

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