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Flashcards in 7th grade math Deck (45)
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1

an equation showing that two ratios are equal is a

proportion

2

the coordinates of a point on a grid are written as an

ordered pair

3

a special ratio that compares a number to 100 and uses the symbol%

percent

4

the set of whole numbers and their opposites, the number -3 is an

integer

5

Write the following decimals as percents: 1. .77 2. .06 3. 0.9 4. 1.04

1. 77% 2. 6% 3. 90% 4. 104%

6

Write the following percents as decimals: 1. 42% 2. 80% 3. 1% 4. 131%

1. .42 2. .8 3. .01 1.31

7

What is 10% of 40

4

8

What is 12% of 100

12

9

What is 99% of 60?

59.4

10

What is 100% of 81?

81

11

What is 45% of 360?

162

12

a base-10 place value system

decimal system

13

an exact spot usually represented by a dot

point

14

a straight path that has no thickness and extends forever in opposite directions, 2 points

line

15

a flat surface that has no thickness and extends forever, 3 points

plane

16

a part of a line with one end point, extends forever in one direction

ray

17

a part of a line with two definite endpoints

line segment

18

figures with the same shape and size

congruent

19

How can you indicate congruent lines?

tick marks

20

What is the tool used to measure angles?

protractor

21

two angles that add up to a 90 degree angle

complementary angles

22

two angles that add up to 180 degrees

supplementary

23

How many degrees are in a straight line?

180

24

two rays with a common endpoint

angle

25

the common endpoint of two rays forming an angle is called what

vertex

26

angles are measured in what units

degrees

27

What is a right angle?

90 degrees

28

angles less than 90 degrees

acute

29

angles more than 90 degrees

obtuse

30

angle that equals 180 degrees

straight angle