perimeter and area - keady maths · exercise 1 work out the perimeter of simple shapes by adding...
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Exercise 1
Work out the perimeter of simple shapes by adding all the given sides or using squared
paper
IN YOUR EXERCISE BOOK, Write the perimeter of each of the shapes – remember to include
units in your answer.
= 1 cm x 1 cm
1 2 3
4 5 6
7 8 9
10 11
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Exercise 2
Calculate the perimeter of the shapes below by adding their sides. Remember to include
your units.
5m 5cm 10cm
2cm 2cm
4m 4m
10cm
12 cm 12 cm
5m
5cm
13m 12m
6m 6m 4cm 5cm
5m
10m 3cm
10m
16cm 3cm
9cm
5cm 5cm 4m 40m
9cm
40cm
28cm 10m
10m 30cm 20m
12cm
8m 15m
20cm
20m 10m 35m
40cm 15m
28cm 20m
12m
20m 10cm 5m
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Exercise 3
Calculate the perimeter of regular shapes with some missing but attainable sides
A REGULAR shape has sides of equal length. If we know one side – we know them all!
Calculate the perimeter of the regular shapes below by adding the sides. Remember to
include your units!
10cm
2m 4m
12m
3cm
3m
11m
12cm
8mm
13mm
(a) (b) (c)
(d)
(e)(f)
(g)
(h)
(i) (j)
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Exercise 5
Work out or estimate the area of a shape by counting squares.
Calculate the area of the shapes below by counting the squares. Remember to include tour
units:
= 1cm2
1 2 3
4 5 6
7 8 9
10 11
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Exercise 7
Calculate the area of a square and rectangle: Area of a rectangle = base x height
Calculate the area of the following squares and rectangles – Remember to give units.
Extra Exercise:
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Exercise 8
Convert between metric units of length
KEY FACTS mm – millimetres cm – centimetres m – metres km- kilometres
There are 10mm in 1cm
There are 100cm in 1m
There are 1000m in 1km
COPY AND COMPLETE THE FOLLOWING IN YOUR EXERCISE BOOKS
To change centimetres into millimetres we do the following:
To change millimetres into centimetres we do the following:
To change centimetres into metres we do the following:
To change metres into centimetres we do the following:
To change metres into kilometres we do the following:
To change kilometres into metres we do the following:
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Exercise 10 Calculate the perimeter of compound shapes with some missing but attainable sides Calculate the perimeter of the shapes below – remember to add ALL SIDES
Extension
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Exercise 12
Find the length of a side of a square/rectangle, given the area
Copy and complete the table into your exercise book – remember to give units
Area of Square Length of Side
100cm2
64cm2
144m2
25mm2
400cm2
1m2
6.25cm2
Exercise 13 – work out the missing side (x)
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Exercise 14
Calculate the area of a compound shape made from squares, rectangles and right-angled
triangles with missing but attainable sides
Extra Exercise
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Exercise 15
The following parallelograms are drawn on centimetre-squared paper. Find the area
Calculate the area of a parallelogram – Area = base x perpendicular height
Extra Exercise
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Exercise 16
Calculate the area of a Trapezium
Calculate the area of the shapes below:
Extra Exercise
12cm
18cm
10cm
Area = 1/2 x (a + b) x h
=1/2 x (18 + 12) x 10
=150cm2
a and b are the
parallel sides
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Exercise 1
Define the terms: whole turn, half turn, quarter turn
Copy and complete the table in your exercise book
START NEXT STEP RESULT
Half-turn
Quarter turn clockwise
Quarter turn
anticlockwise
Full turn
Half-turn
Quarter turn clockwise
Quarter turn clockwise
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Exercise 4
Use a protractor to measure and draw any angle
Extra Exercise
Draw the following angles in your exercise book – leave plenty of space!
a. 36˚
b. 45 ˚
c. 76 ˚
d. 18 ˚
e. 120 ˚
f. 140 ˚
g. 100 ˚
h. 190 ˚
b
a
d
c
f
e
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Exercise 6
Categorise types of angles, i.e. acute, straight, obtuse, reflex
COPY AND COMPLETE IN YOUR EXERCISE BOOKS
Q1. Match each type of angle to its description
Acute
An angle greater than 90o but less than 180o
Straight
A 90o angle
Obtuse
A 180o angle
Reflex
An angle less than 90o
Right
An angle larger than 180o
Q2. What type of angle is each value below?
a) 53o ______________________________
b) 150o ______________________________
c) 69o ______________________________
d) 263o ______________________________
e) 48o ______________________________
f) 118o ______________________________
g) 156o ______________________________
h) 192o ______________________________
i) 90o ______________________________
j) 181o ______________________________
k) 153o ______________________________
l) 180o ______________________________
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Exercise 8
Categorise types of triangles i.e. isosceles, scalene, right angle, equilateral
In your exercise book, list the triangles that are:
Equilateral
Isosceles
Right Angled
Scalene
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Exercise 10
Calculate a missing angle using the appropriate angle fact
A RIGHT ANGLE IS 90˚
ANGLES IN A STRAIGHT LINE TO 180˚
ANGLES AROUND A POINT SUM TO 360˚
VERTICALLY OPPOSITE ANGLES ARE EQUAL
Exercise 11
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Exercise 14
Calculate a missing angle in a triangle
Exercise 15 – Calculate more than one missing angle (Q11 onwards)
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Exercise 1
Read and write time in digital form and in words / Interchange 12 and 24 hour times
Copy and complete in your exercise books
Extra Exercise / Interchange 12 and 24 hour times
0 8 : 1 0
1 0 : 2 0
1 8 : 3 0
1 1 : 1 0
0 0 : 4 0
2 2 : 1 5
2 0 : 2 5
1 2 : 1 5
0 7 : 0 5
0 6 : 5 5
1 7 : 3 5
Words
Ten past Eight
Digital Time (24 Hour) 12-hour
8.10am
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Exercise 2
Draw an analogue clock to show a time given in digital form and in words
YOU WILL BE GIVEN A SHEET TO STICK INTO YOUR BOOK – ON THIS SHEET, DRAW THE
FOLLOWING TIMES:
1. 23:00 11. Ten past nine
2. 17:00 12. A quarter past twelve
3. 12:10 13. Half past three
4. 00:00 14. Ten minutes to nine
5. 13:15 15. Ten minutes past one
6. 12:55 16. Half past two
7. 17:45 17. A quarter to eight
8. 14:20 18. A quarter past three
9. 11:40 19. Twenty minutes to six
10. 00:40 20. Half past five
Exercise 3- Calculate time intervals
0 8 : 1 0 until 0 8 : 3 0
1 0 : 2 0 until 1 2 : 2 0
1 8 : 3 0 until 1 8 : 4 5
1 1 : 1 0 until 1 2 : 0 0
0 0 : 4 0 until 0 1 : 0 0
2 2 : 1 5 until 2 3 : 4 5
2 0 : 2 5 until 2 2 : 3 5
1 2 : 1 5 until 1 4 : 2 5
0 7 : 0 5 until 0 8 : 5 5
0 6 : 5 5 until 0 7 : 5 0
1 7 : 3 5 until 1 6 : 0 5
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Exercise 5
Extract information from simple timetables
A.
A bus leaves Southville at 10:38
1. At what time should the bus arrive in Newtown?
2. How long will the journey take?
James arrives at the Milton bus stop at 09:29
3, How many minutes should he wait?
4. At what time should James arrive at Red Island?
Sally wants to travel from Southville to Bakerstown. The 12.05 is the “express” buss
5. How many minutes shorter is the Journey if she takes the “express” bus?
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Exercise 6
Add a time interval on to a given time
Copy and complete in your exercise books
Exercise 7
Subtract a time interval from a given time
1 8 : 0 0 minus 30 mins
1 2 : 2 0 minus 30 mins
1 3 : 1 5 minus 45 mins
1 1 : 1 0 minus 45 mins
1 4 : 4 0 minus 15 mins
2 3 : 1 0 minus 1 hour 30 mins
1 0 : 3 0 minus 1 hour 10 mins
0 8 : 1 0 plus 30 mins
1 1 : 3 0 plus 30 mins
1 2 : 1 0 plus 45 mins
1 4 : 1 5 plus 45 mins
0 4 : 4 5 plus 15 mins
2 3 : 1 0 plus 1 hour 30 mins
1 0 : 3 0 plus 1 hour 10 mins
1 4 : 2 5 plus 40 mins
0 8 : 0 0 plus 50 mins
0 7 : 5 0 plus 50 mins
1 7 : 3 0 plus 45 mins
0 9 : 4 5 plus 55 mins
1 5 : 3 5 plus 55 mins
1 8 : 3 5 plus 1 hour 40mins