Math Plus 6 Definitions

Front 1

Angles

Back 1

Angles are classified according to the amount of turn between two arms

Front 2

Right angle

Back 2

Square corner, 90°

Front 3

Obtuse angle

Back 3

Greater than 90° but less than 180°

Front 4

Acute angle

Back 4

Less than 90°

Front 5

Straight angle

Back 5

Can be made from two right angles, 180°

Front 6

Reflex angle

Back 6

Greater than 180° but less than 360°

Front 7

Polygon

Back 7

Any two dimensionals shapes that has three or more straight sides and angles

Front 8

Area of a rectangle formula

Back 8

Area equals length times width

Front 9

Factors

Back 9

Whole numbers that can be multiplied with another number to make a new number

Front 10

Percentage

Back 10

Another way of recording a fraction with the denominator of 100. A percentage sign % is used to display percentages

Front 11

Square numbers

Back 11

Numbers that can be arranged in the shape of a square array. They are equal to a number multiplied by itself

Front 12

Line symmetry

Back 12

A shape has line symmetry if both its parts match when it is folded along the line

Front 13

Describing likelihood using fractions

Back 13

When fractions are used to describe the chance of an event happening, the total of all the fractions must equal one

Front 14

Improper fractions

Back 14

Improper fractions have numerators larger than the denominators

Front 15

Mixed numbers

Back 15

A whole number consists of a whole number and a fraction

Front 16

Prime numbers

Back 16

Numbers that have only themselves and one as a factor

Front 17

Composite numbers

Back 17

Numbers with more than two factors

Front 18

Decimal point alignment

Back 18

Always keep the decimal points in a vertical line

Front 19

Parallelogram

Back 19

A four sided shape where each pair of opposite sides are parallel and equal in length

Front 20

Equivalent fractions

Back 20

Fractions that have the same value

Front 21

Multiplying decimals

Back 21

When multiplying decimals by whole number, the number of numerals after the decimal point in the product must be equal to the total number of numerals after the decimal point in the question

Front 22

Order of operation

Back 22

BODMAS

Front 23

Non-standard units

Back 23

Before standard measurements people use natural measures. These consisted of measurements using part of the body

Front 24

Hectare

Back 24

10,000 m² equals one Hectare

Front 25

Cubic centimetres

Back 25

Cubic centimetres measure volume of three-dimensional shapes

Front 26

Volume formula

Back 26

Base area times height

Front 27

Speed

Back 27

Formula to work out speed, speed equals distance travelled divided by time taken