However, these exercises will help you to brush up your numeracy skills. You will find the class much easier if you can do this.
If you find this web page, please print it and bring it to class.
Also, please bring your calculator.
If you think it is all trivial, still come to class: explaining things
to others is the best way to learn. You and others will both benefit.
If you think it is all too hard, do not give up. It is not necessary that
all these exercises get completed: I just wanted to be sure there is
enough. Your TA will go at the pace the class needs.
1 a) 60 is what percent of 90 ?
b) 90 is what percent of 60 ?
c) 90% of 90 is what ?
d) 110% of 90 is what?
e) 90% of what is 90 ?
f) 66.7% of what is 60?
2 True or false;
a) Sqrt(17)/17 = 17/sqrt(17)
b) 17/289 = 1/17
c) sqrt(1/2) is smaller than (1/2)
d) sqrt(43) is smaller than sqrt(46)
e) sqrt(100,000) is more than 1,000
f) 25% is 1 in 25
g) 20% is 1 in 5
h) 20% is 0.2
i) 1 in 25 is more than 1 in 20
3) a) Find the average of 1, 6, 3, 4 and 6
b) Find the average of 1, -6, 3, -4 and 6.
c) Find the average of 1, 36, 9, 16, and 36.
4) Solve the following equations for x and y
a) x+9 = 3x + 1
b) x2 - 7 = 42
c) x+y = 9 and x-y = 1
5) y = 2x + 7 is a straight line graph plotting y against x.
The following points are above, on, or below the line:
(1,8), (3,11), (2.5, 12), (0,6), (-1, 5).