Unit 1 Number Sense

Vocabulary

100

Two numbers that have the same absolute value but have different signs

Opposites

200

All counting numbers, plus the number zero

Whole numbers

300

Means left to right

Horizontal

400

All whole numbers and their opposites

Integers

500

This acronym helps us remember the order of operations

PEMDAS

Exponents

100

The BASE in the expression below

4³

4

200

The exponent in the expression below

2^5

5

300

Compare the following

2⁷ _____ 7²

128 >  49

400

The exponential form of this expression

2 * 2 * 2 * 2

2⁴

500

The expanded form of this expression

4⁵

4 x 4 x 4 x 4 x 4

Order of Operations

100

Operation you'd do first:

 9 - 3 + 4 x 5 / 2

Multiplication

200

5 + 13 -2

16

300

8 - 3 x 2 + 7

9

400

14 + 3 (7-2) - 2 X 5

19

500

( 9 -  3  x 2) + 5²

28

Evaluate

100

7²

49

200

2³ 

8

300

3³

27

400

Compare

6²  _____  87 - 50

<

500

4 x 4 + 8² 

80

Absolute Value

100

The opposite of -3

3

200

Order from least to greatest

 20, |-13|, -6, -2

-6, -2, 13, 20

300

|-26|

26

400

Number with the same absolute value as -55

55

500

Order from least to greatest

|6|, 5 , -4, |-10|,  8

-4, 5, 6, 8, 10