Midterm Vocab Flashcards Preview

Official Grade 7 Math > Midterm Vocab > Flashcards

Flashcards in Midterm Vocab Deck (43):
1

X-axis

the horizontal number lin eon the coordinate grid

2

Y-axis

the vertical number line on the coordinate grid

3

origin

the point where the x-axis and the y-axis cross

4

quadrant

the four regions on the coordinate grid

5

coordinates are values in a...

ordered pair

6

Vertex

a point where two sides of a figure meet

7

the plural of vertex is

vertices

8

the movement of a geometric figure is called a

transformation

9

translation

a slide along a straight line

10

reflection

a mirror image

11

a turn about a fixed point is called a

rotation

12

to approximate an answer is to

estimate

13

Overestimating is when

the estimate is larger than the actual answer

14

Underestimating is when

estimating a number that's smaller than the actual answer

15

How does adding a zero after the decimal point change the value? For example, 2.3 and 2.30

It does not change the value. 2.3 is worth the same amount as 2.30

16

What does the symbol ~ mean?

Approximately

17

What is the order of operations?

BEDMAS
(Brackets)
(Exponents)
(Division)
(Multiplication)
(Addition)
(Subtraction)

18

Another word for brackets is

parentheses

19

lines in the same plane that never cross or intersect are considered

parallel

20

Lines that intersect at 90 degrees are called

perpendicular

21

How are perpendicular lines marked?

with a square in the corner

22

a line that divides a line segment in half and is at right angles

a perpendicular bisector

23

an angle that is less than 90 degrees is called an

acute angle

24

the line that divides an angle into two equal parts

angle bisector

25

an angle that is greater than 90 degrees is called

obtuse

26

a side of a two dimensional closed figure is called the

base

27

the perpendicular distance from the base to the oppositte side

height

28

'h' is the symbol for

height

29

what does percent mean?

out of 100

30

a decimal number with a digit or group of digits that repeats forever is called a

repeating decimal

31

a decimal number in which the digits stop

terminating decimal

32

probability

the likelihood or chance of an event occuring

33

the equation for probability is

favourable outcomes / possible outcomes

34

outcome

one possibility result of a probability experiment

35

favourable outcome

a successful result in a probability experiment

36

sample space

all possible outcomes of an experiment

37

tree diagrams are used to

organize outcomes

38

random

an event in which every outcome has an equal chance of occuring

39

experimental probability

the probability of an event occuring based on experimental results

40

the expected probability of an event occurring is called the

theoretical probability

41

quotient

the result of a division question

42

common factor

a number that two or more numbers are divisible by

43

what is a common factor of 8 and 12?

4