Surds
Simplify √ 25
5
Make x the subject: y = x + 5
x = y - 5
What is the Mean of this set of numbers?
2, 4, 6, 8
Mean = 5
What is 6 x 7?
42
*DOUBLE POINTS*
What is 1/2 of 20?
10
Simplify √ 50
5√ 2
Make x the subject. y = 3x - 7
x = (y+7)/3
*DOUBLE POINTS*
What is the Mode of this set of numbers?
3,5,7,7,9
Mode = 7
What is 12 x 15?
180
30
Simplify √ 72
6√ 2
*DOUBLE POINTS* Make x the subject : 2y=4x+8
x = y/2 - 2
What is the Median of this set of numbers?
10,15,20,25,30
Median = 20
What is 23 x 17?
391
What is 2/5 of 45?
18
*DOUBLE POINTS*
Simplify √ 18/√ 2
3
Make x the Subject: y= (2x+3)/5
x = (5y-3)/2
What is the Range of this set of numbers?
12,18,25,30,40
Range = 28
*DOUBLE POINTS*
What is 125 x 24?
3000
what is 7/8 of 64?
56
The area of a square is 50cm2 . Express the length of one side in surd form, simplified.
make x the subject: y=√ x+4
x = y2 - 4
What is the Mean, Median, Mode and Range of this set of Numbers?
3, 5, 7, 7, 9, 11
Mean = 7
Mode = 7
Median = 7
Range= 8
What is 347 x 56?
19432
What is 5/12 of 144?
60