Year 5 Mental Maths Facts Quiz
Fiendish Level
How many seconds in an hour?
• 3600 seconds
How many weeks in 11 years?
• 572 weeks
How many days are there in the first 6 months of the year
(assuming it is not a Leap Year)?
• 181 days
What is 13:13 in 12 hour (analogue) time?
• 1.13pm
What is 5 past midnight in 24 hour (digital ) time?
• 00:05
How many acute angles are there is this triangle?
• 3
Name this triangle
• scalene
What is the size of the missing angle?
• 78
?
19
46
37
What is the size of the missing angle?
• 124
?
35
21
What is the size of the missing angle?
• 156
?
41
73
What is a 4 as a decimal? 5
• 0.8
What is 1 as a percentage? 10
• 10%
What is 0.03 as a fraction?
• 3
100
What is 101% as a decimal?
• 1.01
What is 7% as a fraction?
• 7
100
List the first 10 prime numbers?
• 2, 3, 5, 7, 11, 13, 17, 19, 23, 29
What is 9 ?
• 81
2
What is the square root of 144?
• 12
What is the perimeter of this rectangle?
• 42.6 cm
2.3cm
19cm
What is the area of this rectangle?
• 43.7 cm
2.3cm
19cm
2
What is the volume of this cuboid?
• 2640 cm
12cm
20cm
3
11cm
Convert 4.05 kilograms to grams.
• 4050g
Convert 430 millimetres to metres.
• 0.43 m
What’s 10 ¾ litres in millilitres?
• 10750 ml
What’s 0.02 of a kilometre in metres?
• 20m
? + 0.15 = 1
• 0.85
How many faces does a pentagonal prism have?
• 8
What is this shape called?
• Octahedron
What is this shape called?
• Septagon/heptagon
How many vertices does a pentagonal based pyramid have?
• 6
What number does this Roman Numeral represent CX?
• 110
What number does this Roman Numeral represent MDLV?
• 1555