Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 664 · 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. 1.27 + 28 =
2. 2.14 laddoos are packed in boxes of 3. How many laddoos are left over?
3. 3.Double 31 =
4. 4.62 + 71 =
5. 5.62 laddoos are packed in boxes of 5. How many laddoos are left over?
6. 6.What is the remainder when 32 is divided by 5?
7. 7.16 + 9 =
8. 8.47 × 3 =
9. 9.12 + 13 =
10. 10.82 − 21 =
11. 11.51 × 4 =
12. 12.25% of ₹90 =
13. 13.You buy a cricket ball for ₹73 and pay with a ₹100 note. How much change do you get, in rupees?
14. 14.81 − 33 =
15. 15.112 ÷ 8 =
16. 16.You start your homework at 5:10 and finish at 7:20. How many minutes did you work?
17. 17.36 + 5 =
18. 18.You buy a pencil box for ₹12 and a pen for ₹42. You pay with a ₹100 note. How much change do you get, in rupees?
19. 19.75 × 9 =
20. 20.Half of 156 =
21. 21.Best estimate of 91 × 52? (a) 450 (b) 45000 (c) 4500
22. 22.Best estimate of 32 × 30? (a) 9000 (b) 90 (c) 900
23. 23.A train leaves at 3:10 and reaches the next city at 6:20. How many minutes is the journey?
24. 24.31 + 41 =
25. 25.17 + 19 =
26. 26.48 ÷ 4 =
27. 27.10% of ₹850 =
28. 28.76 − 19 =
29. 29.You buy a kite for ₹70 and pay with a ₹100 note. How much change do you get, in rupees?
30. 30.22² =
31. 31.21 × 5 =
32. 32.637 ÷ 7 =
33. 33.83 children stand in rows of 8. How many full rows can they make?
34. 34.11² =
35. 35.41 × 4 =
36. 36.312 ÷ 8 =
37. 37.You buy a water bottle for ₹12 and a pen for ₹20. You pay with a ₹100 note. How much change do you get, in rupees?
38. 38.42 − 19 =
39. 39.3 + ? = 10
40. 40.Half of 172 =

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