Year 7 GL Practice Flashcards

This set of vocabulary flashcards covers essential math concepts from the Year 7 GL practice notes, including number properties, geometry, statistics, and measurement.

Multiple of 6

A number that can be divided by $6$ without a remainder, such as $18$ from the list $1, 2, 5, 8, 14, 18, 26, 99$.

Prime numbers

Numbers that have only two factors: itself and $1$; examples from the lecture include $3$ and $19$.

Factors of 28

Whole numbers that divide into $28$ exactly, which include $4$, $7$, and $28$.

Isosceles triangle

A triangle characterized by having two equal sides and two equal angles, such as one with angles of $65^{\circ}$, $65^{\circ}$, and $50^{\circ}$.

Reflection

A type of transformation where a shape is flipped over a mirror line to create a symmetrical image.

Translation

A type of transformation where a shape is moved or slid to a new position without being rotated or reflected.

MMXII

The Roman numeral representation for the decimal year $2012$.

MMVIII

The Roman numeral representation for the decimal year $2008$.

Perimeter formula ($P$)

The distance around the outside of a shape; for the specific rod shape provided, the simplified formula is $P = 4x + 2y$.

Range

The difference between the highest and lowest values in a data set; for example, article lengths ranging from $6$ to $9$ paragraphs have a range of $3$ ($9 - 6 = 3$).

Mode

The value that appears most frequently in a data set; in the pipe diameter set of $5, 4, 5, 6, 5\,cm$, the mode is $5\,cm$.

Equivalent ratios

Ratios that represent the same proportional relationship, such as $3:5$ and $9:15$.

Pie chart angle for salad

The sector size in degrees calculated from student data; for $20$ out of $120$ students, the angle is $60^{\circ}$.

Circumference

The distance around the edge of a circle; for a circle with a radius of $3\,ft$, it is $18.84\,ft$ (using $\pi = 3.14$).

Knots

A unit of speed used for ships; for instance, $15\,\text{knots}$ is equivalent to approximately $26$ to $28\,km/h$.

Probability of a total score of 6

The likelihood of rolling a sum of $6$ using two spinners numbered $1$ to $4$; recorded as having $3$ favorable outcomes ($2,4; 3,3; 4,2$) out of $16$ total possibilities, resulting in $3/16$.