Approximation
Multiplies
Factors
Primes
General
100
Approximate 125 to the nearest 10
130
100
Find the first 6 multiples of 6
6, 12, 18, 24, 30, 36
100
Find all the factors of 9
1, 3, 9
100
Is 21 a prime number?
No
100
What is the perimeter of a circle called?
Circumference
200
Approximate 21 x 8
20 x 10 = 200
200
Find the LCM of 2 and 6
12
200
Find all the factors of 30
1, 2, 3, 5, 6, 10, 15, 30
200
Is 2 a prime number?
Yes
200
Name the four mutliplying rules we have learnt
Distributive law, Napier bones, Doubling/Halving and fast 11 x
300
Approximate 94 x 82
90 x 80 = 7200
300
Find the LCM of 12 and 18
36
300
Find the HCF of 18 and 24
6
300
Define what a prime number is
A number which has exactly two factors, 1 and itself
300
What is the order of operations and explain
BEDMAS
400
Approximate 3591 x 32
4000 x 30 = 120,000
400
Find the LCM of 3 and 14
42
400
Find all the factors of 81
1, 3, 9, 27, 81
400
List all the prime numbers between 1 and 20
2, 3, 5, 7, 11, 13, 17, 19
400
What is an obtuse angle?
between 90 and 180 degrees
500
Approximate 2452 / 36
2000 / 40 = 50
500
Find the LCM of 13 and 6
78
500
Find the HCF of 84 and 144
12
500
List all the prime numbers between 20 and 50
23, 29, 31, 37, 41, 43, 47
500
There is 54 apples in a bowl. You take 6 of them. How many do you have?
6
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