All whole numbers (both positive and negative) and zero.
Squared Number
A number multiplied by itself
Reciprocal
1 divided by the number
Quadrilateral
a four-sided polygon
Polygon
a flat shape with many straight sides
Trapezium
2D one set of parallel lines. Quadrilateral
square
A quadrilateral with 4 sides that are equal and has all 90 degree angles
Rectangle
a quadrilateral with four right angles
Circle area
πr²
Circle Circumference
2πr
Pentagon
5 sided polygon
hexagon
6 sided polygon
- + -
positive
+ + +
- + +
negative
+ + -
significant figures
All the digits that can be known precisely in a measurement, plus a last estimated digit
Decimal place
places to the right of the decimal point
1kg
1000g
1g
1000mg
1l
1000mL
1kl
1000L
1m
100cm
1cm
10mm
1km
1000m
1 tonne
1000kg
Angles in a triangle
Add up to 180
Angles in a square
360
Angles in a circle
Angles in a pentagon
540
Angles in a hexagon
720
In a Venn diagram U means
Union - any number in side the circles
In a Venn diagram an upside down U means
And- has to be in beth circles