Mental Maths Questions Worksheet for Class 5
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.
NameDateTime takenScore ___ / 40
- 1.8 + ? = 10
- 2.40 × 8 =
- 3.33 + 58 =
- 4.22 + 23 =
- 5.23² =
- 6.304 ÷ 8 =
- 7.You buy a water bottle for ₹249 and pay with a ₹500 note. How much change do you get, in rupees?
- 8.75 + 19 =
- 9.26 + 7 =
- 10.458 + 99 =
- 11.7 + 6 =
- 12.55 − 21 =
- 13.Best estimate of 490 + 243? (a) 500 (b) 900 (c) 700
- 14.51 − 36 =
- 15.You buy a water bottle for ₹14 and a pen for ₹31. You pay with a ₹100 note. How much change do you get, in rupees?
- 16.81 − 65 =
- 17.68 + 9 =
- 18.What is the remainder when 65 is divided by 8?
- 19.19 + 21 =
- 20.3 + ? = 10
- 21.Best estimate of 49 × 49? (a) 25000 (b) 250 (c) 2500
- 22.A cricket match starts at 5:20 and the first innings ends at 7:40. How many minutes did the innings last?
- 23.27 laddoos are packed in boxes of 4. How many laddoos are left over?
- 24.71 × 5 =
- 25.104 − 70 =
- 26.5% of ₹50 =
- 27.78 − 56 =
- 28.Double 64 =
- 29.2 + ? = 10
- 30.48 + 4 =
- 31.106 laddoos are packed in boxes of 8. How many laddoos are left over?
- 32.189 ÷ 7 =
- 33.Best estimate of 580 + 414? (a) 800 (b) 1200 (c) 1000
- 34.You buy a water bottle for ₹30 and a pen for ₹45. You pay with a ₹100 note. How much change do you get, in rupees?
- 35.You buy a bag of mangoes for ₹14 and pay with a ₹100 note. How much change do you get, in rupees?
- 36.21² =
- 37.301 ÷ 7 =
- 38.72 laddoos are packed in boxes of 5. How many laddoos are left over?
- 39.9 + ? = 10
- 40.23 + 22 =
Answer key
- 2
- 320
- 91
- 45
- 529
- 38
- 251
- 94
- 33
- 557
- 13
- 34
- 700
- 15
- 55
- 16
- 77
- 1
- 40
- 7
- 2500
- 140
- 3
- 355
- 34
- 2.5
- 22
- 128
- 8
- 52
- 2
- 27
- 1000
- 25
- 86
- 441
- 43
- 2
- 1
- 45
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths