Cơ sở 1: Số 19F, ô đất A10, KĐT Nam Trung Yên, Cầu Giấy, Hà Nội
Cơ sở 2: Tòa T8, KĐT Times City, Hai Ba Trưng, Hà Nội
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_________
HOMEWORK LESSON 15
FRACTION
No calculator allowed.
1 Write
8
as a percentage.
5
________________________________________________
2 Write 65% as a fraction, in its simplest form.
_____________________________
__________________________________________________________________
_______
3 Complete this table.
Fraction
Decimal
Percentage
0.4
2
1
4
4 Find:
a 6% of 700 ______________________________________________________
b 95% of 80
______________________________________________________
5 a Write 0.5% as a fraction, in its simplest form. _____________________
_____________________________________________________________
________________________________________________________________________________________________________
HOTLINE: 0981.000.312 / 0981.000.412
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Cơ sở 1: Số 19F, ô đất A10, KĐT Nam Trung Yên, Cầu Giấy, Hà Nội
Cơ sở 2: Tòa T8, KĐT Times City, Hai Ba Trưng, Hà Nội
_____________________________________________________________________________________
_________
______
b Work out 0.5% of 7000.
__________________________________________
_____________________________________________________________
______
6 The population of a town increases from 20 000 to 26 000.
What percentage of 20 000 is 26 000? _____________________________
7
Work out the percentage of the rectangle that is shaded. _________________
__________________________________________________________________
_______
8 There are 4000 people at a football match. 0.6% are children.
How many people at the football match are not children? _________________
__________________________________________________________________
_______
__________________________________________________________________
_______
9 Work out:
________________________________________________________________________________________________________
HOTLINE: 0981.000.312 / 0981.000.412
2
Cơ sở 1: Số 19F, ô đất A10, KĐT Nam Trung Yên, Cầu Giấy, Hà Nội
Cơ sở 2: Tòa T8, KĐT Times City, Hai Ba Trưng, Hà Nội
_____________________________________________________________________________________
_________
a 250% of 64
____________________________________________________________
___
b 115% of $7
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___
10 Work out the missing percentage.
60% of 90 = ___% of 45
11 Write as a percentage:
a
1
8
____________________________________________________________
_______
b
11
8
____________________________________________________________
_______
12 Circle the odd one out.
A 5% of 120
B 20% of 30
C 50% of 12
D 125% of 5
E 150% of 4
________________________________________________________________________________________________________
HOTLINE: 0981.000.312 / 0981.000.412
3
Cơ sở 1: Số 19F, ô đất A10, KĐT Nam Trung Yên, Cầu Giấy, Hà Nội
Cơ sở 2: Tòa T8, KĐT Times City, Hai Ba Trưng, Hà Nội
_____________________________________________________________________________________
_________
GRAPHS
13 A hat costs $h and a coat costs $c.
The coat costs $20 more than the hat.
Write a function to show
this.____________________________________________
__________________________________________________________________
_______
14 A man is m years old. A woman is w years old.
w = 4m
Describe in words the connection between the ages of the woman and the man.
__________________________________________________________________
__________________________________________________________________
______________
________________________________________________________________________________________________________
HOTLINE: 0981.000.312 / 0981.000.412
4
Cơ sở 1: Số 19F, ô đất A10, KĐT Nam Trung Yên, Cầu Giấy, Hà Nội
Cơ sở 2: Tòa T8, KĐT Times City, Hai Ba Trưng, Hà Nội
_____________________________________________________________________________________
_________
15
The length of a rectangle is l cm and the width is w cm.
w=l−6
a Find the width of the rectangle when the length is 15 cm.
____________________________________________________________
______
b Find the length of the rectangle when the width is 30 cm.
____________________________________________________________
______
16 For the function y = x + 2:
a Complete this table.
−4
x
x+2
−2
0
2
4
2
b
Use these axes to draw a graph of y = x + 2.
c
On the same axes, draw the graph of y = x − 1.
________________________________________________________________________________________________________
HOTLINE: 0981.000.312 / 0981.000.412
5
Cơ sở 1: Số 19F, ô đất A10, KĐT Nam Trung Yên, Cầu Giấy, Hà Nội
Cơ sở 2: Tòa T8, KĐT Times City, Hai Ba Trưng, Hà Nội
_____________________________________________________________________________________
_________
17 For the function y = 0.5x:
a Complete this table.
x
0.5x
−6
−4
−2
0
2
−2
4
6
2
b
Use these axes to draw a graph of y =
0.5x.
c On the same axes, draw the graph of y = 3x.
18
________________________________________________________________________________________________________
HOTLINE: 0981.000.312 / 0981.000.412
6
Cơ sở 1: Số 19F, ô đất A10, KĐT Nam Trung Yên, Cầu Giấy, Hà Nội
Cơ sở 2: Tòa T8, KĐT Times City, Hai Ba Trưng, Hà Nội
_____________________________________________________________________________________
_________
Write the names of lines A and B on this grid. _____________________________
__________________________________________________________________
__________________________________________________________________
______________
19 A straight line passes through (−4, −8) and (8, −8).
Write the name of the line.
_______________________________________________
20
This graph shows the speed of a car as it slows down.
a Find the speed of the car after 4 seconds. _________________________
b How much does the speed of the car decrease every second?
____________________________________________________________
_______
c If the car continues to slow down at the same rate, how long will it take for
the car to stop?
____________________________________________________________
_______
21
________________________________________________________________________________________________________
HOTLINE: 0981.000.312 / 0981.000.412
7
Cơ sở 1: Số 19F, ô đất A10, KĐT Nam Trung Yên, Cầu Giấy, Hà Nội
Cơ sở 2: Tòa T8, KĐT Times City, Hai Ba Trưng, Hà Nội
_____________________________________________________________________________________
_________
This is a circular vase. The top of the vase is narrower than the bottom.
The vase is filled with water at a constant rate.
Use the axes below to sketch a graph to show how the depth of the water changes
with time.
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HOTLINE: 0981.000.312 / 0981.000.412
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