1. Write 0.62 as percentage.
2. The Price of the coat is $65. In a sale price is reduced by 15%
What is the sale price of the coat?
3. Solve 2x + 5 = -17
4. Find 55% of 160 kg.
5. Miss Jones gives her class a test. The test is out of 40 marks.
Here are their scores. 31 29 20 35 32 38 32.
(a) Work out the mode.
(b) Work out the mean.
(c) Work out the median.
6. (a) 25 x 4 x 63 =
(b) 43 x 62 =
(c) 6 x 12 x 19 =
(d) 32 x 42 x 43 =
7. In year 9, there are 150 students 16% of the students are left
handed.
(a) Work out how many students are left handed.
(b) Work percentage of the students are right handed?
At a football match, 37% of the fans are children.
There are 12600 fans at the match.
Work out how many children went to the match?
8. The length of nine caterpillars are listed below
9cm 4cm 8cm 10cm 7cm 5cm 13cm 10cm 6cm.
(a) Find the mode =
(b) Find the median =
(c) Find the mean =
(d) Find the range =
9. Calculate the following.
(a) 15% of 80ml
(b) 9% of 205kg
(c) 45% of $135
(d) 17% of 540km
(e) 53% of 700g
(f) 97% of $54
(g) 13% of 0.05 tonnes
10. Complete all the problems.
(a) Change 0.12 to a fraction
(b) Change 0.54 to a fraction
(c) Change 0.32 to a fraction
68
(d) Write 100
in decimal form.
11. Write down the missing fraction that
each pair adds up to 1.
1
4
+
= 1
3
+
= 1
10
12. Workout 11.28 - 2.843
16. Expand and simplify.
4c – 7(2d + c)
17. Think about the fraction
How many of them are added to make 1?
18.(a) Look at these equations.
48 = 3 x 2a , 56 = 7 x 2b
What are the values of a and b?
(b) 48 x 56 = 3 x 7 x 2c
What is the value of c?
19. Simplify the following expressions.
a)
(√11)2
b)
√18
c)
√8
x
x
=
√2
√2
=
=
20. Write 180 as its product of prime factors using ladder
method.
21. The price of a T-shirt is $85. The price is reduced by 60%.
What is the reduced price.
22. Simplify
(a) e x e x e x e
(b) 3a – a2 + 5a + 3a2
23. The cost of a CD player is $85 plus
total cost of the CD plsyer?
1
17 2 %
tax. What is the
24. Write the following surds in the form 𝑎√𝑏 where a and b are
integers.
a)
√20
b) √45
c) √32
26. Solve the following
(a)
√26 + √36
=
(b) 14 -(3 + 7) =
(c) -7 x -2 =
(d) -6 x -3 =
(e) 9
÷ −3
(f) −24
=
÷ −4=
(g) 9
× −8 =
(h) 5
+ 5 × 5 =
(i) 100
(j) 7
− 40 × 2 =
+ 2 × 3 =
27. Write eaach of the following asa ordinary numbers
a) 2 x 10-3 =
b) 4.112 x 10-3 =