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Exercise 1.
(4 marks)
Round
to the accuracy indicated:
a).
164 (tens)
b).
169 (tens)
c).
1238 (hundreds)
d).
1258 (hundreds)
e).
18255 (thousands)
f).
18651 (thousands)
g).
1.394 (2 decimal places)
h).
1.394 (1 decimal place)
Exercise 2.
(4 marks)
Add:
(write each in lowest terms)
a).
1
3
+
3
5
=
4
12
b).
1
+
5
=
4
12
c).
2
+
1
=
3
9
d).
7
+
2
=
10
15
Exercise 3.
(4 marks)
Substract:
(write each in lowest terms)
a).
2
-
1
1
=
4
b).
5
-
1
=
4
6
c).
1
-
5
=
3
12
d).
2
-
1
=
3
6
Exercise 4.
(4 marks)
Multiply:
(write each in lowest terms)
a).
3
1
x
5
=
4
14
b).
2
x
9
=
3
11
c).
9
x
8
=
4
15
d).
1
x
3
=
2
5
Exercise 5.
(4 marks)
Divide:
(write each in lowest terms)
a).
1
3
5
1
=
4
8
b).
2
2
=
3
c).
3
9
=
5
d).
5
10
=
8
Exercise 6.
(2 marks)
What percent is
a).
19 of 25?
%
b).
13 of 50?
%
c).
63 of 75?
%
d).
87 of 100?
%
Exercise 7.
a).
Find 20 % of 65
(1 mark)
b).
60 % of a number is 15.
What is the number?
(2 marks)
Exercise 8.
(3 marks)
Evaluate
a).
8
2
+
3
2
=
b).
8
3
-
2
5
=
c).
3
3
x
2
4
=
Exercise 9.
(10 marks)
Simplify - use the order of operations:
a).
4(-2)
2
-
3(-2)
=
b).
(-3 - 4)
2
-
(3 + 2)
2
=
c).
5(-2)
3
-
4(-1 - 2)
3
=
d).
-2(1 - 5)
3
-
3(1 - 5)
2
=
e).
8 x 2 + 5 x 8
=
3 x 2 + 15
3
Exercise 10.
(8 marks)
Solve:
a).
2
x
+
1
=
3
3
x
=
b).
x
+
3
=
2
3
x
=
c).
3
y
-
4
=
2
4
y
=
d).
3
=
3
y
-
18
4
y
=
Exercise 11.
(4 marks)
Find the value of the missing measure (two decimal places).
a).
a
=
b).
x
=
Exercise 12.
(3 marks)
Find the mean, median and mode of the following data:
61
35
47
55
57
84
61
49
63
49
72
61
54
a).
mean
=
b).
mode
=
and
d).
median
=
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