Worksheet 2-02
360 scale
Angles are measured in degrees. The circles below show a complete turn or revolution divided into
360 degrees. The opening between each line is 1.
Angles can be drawn in different orientations.
Angles pointing right:
90
70
120
150

Worksheet 2-01
Brainstarters 2
Part A: Basic skills (15 marks)
1 13 30 =
2 How many axes of symmetry has a square?
11 Calculate the area
of this triangle:
3 cm
3 Write 359 in Roman numerals.
8 cm
4 Convert 1.62 m to mm.
12 Write in gures the number Thirte

Worksheet 2-03
Make your own protractor
In this activity, you will make two simple protractors for drawing and measuring angles.
An angle can be drawn in different orientations.
30
Right
30
Left
Baseline
Baseline
This 30 angle has a baseline that
points t

Brainstarters 1
Worksheet 1-01
Part A: Basic skills (15 marks)
1 How many sides has a hexagon?
2 What comes next in this pattern?
8, 11, 14, 17, 20,
3 Simplify
9 How many metres in
1
-2
km?
10 Find the perimeter of this
square.
12
- .
40
7 cm
4 Write 736

Worksheet 1-06
Big numbers
1 Complete:
5 How many 0s has ten million?
Number
Word
1
one
10
100
1000
10 000
ten thousand
100 000
6 Write the number that is:
a 4 less than 810 913
b a thousand thousands
c 10 times bigger than a hundred thousand
d 12 more th

Worksheet 1-07
Base 8 number system
In our number system, we use 10 digits (0, 1, 2, 3,
4, 5, 6, 7, 8 and 9) because we count with 10
ngers. But suppose we lived on the planet
Sagassia whose inhabitants had eight ngers. Then
we would probably use a number

Ancient Chinese rod numerals
Worksheet 1-03
Early number systems were often clumsy to use because they involved repeating one symbol, such as
a stroke, many times. In 500 BC, the Chinese used the same symbol (a rod) to represent numbers in a
clever way. T

Ancient number systems
Worksheet 1-05
1
2
3
4
5
6
7
8
9
10
Sumerian 3200 BC
Babylonian 3000 BC
Greek Ionic 800 BC
Chinese 500 BC
Greek Attic 450 BC
Hindu AD 2
Mayan AD 400
Hindu-Arabic AD 900
Hindu-Arabic AD 976
Hindu-Arabic AD 1400
Sumerian
Greek Ionic
=

Mayan numerals
Worksheet 1-04
The Mayan people lived in central America around Mexico and developed their number system in
400 AD. They only used three symbols for numbers and were the rst civilisation to invent a numeral
for zero. The Mayan numerals for