Operations & Expressions w/Integers & Rational Numbers (Ch.2)

Vocabulary

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Adding & Subtracting Integers & Rational Numbers

Multiplying Integers & Rational Numbers

Dividing Integers & Rational Numbers

100

DOUBLE POINT QUESTION!

The like terms in this expression are:

-3x - 5 - 7x - 9

- 3x and - 7x, - 5 and - 9

100

Simplify:

3(x - 2) + 14

3x + 8

100

-11 + 3

-8

100

-8(-11)

100

The reciprocal of this number:

-9

-1/9

200

Rational or irrational?

0.3

Rational

200

What is the sum of the absolute value of -28 and the opposite of -12?

200

DOUBLE POINT QUESTION!

The temperature inside Mammoth Cave is about 12.2 degrees C year round. If the temperature outside the cave is -2.4 degrees C, what is the temperature change from outside to inside the cave?

14.6 degrees C

200

Use the distributive property:

(s-9)9

9s- 81

200

15 divided by (-3/4)

-20

300

In the expression -15x + x², why can't we combine the terms?

They have the same base, but not the same exponent.

300

DOUBLE POPINT QUESTION!

Simplify:

(z - 4)(-z)

-z²+ 4z

300

The temperature change from -45 degrees to 62 degrees.

107 degrees

300

-3/4(2)(-6)

300

The reciprocal of this number (in fraction form):

-4 1/3

-3/13

400

What type of number is -4?

Rational number, integer, or whole number?

Integer

400

Order from least to greatest:

-5.2, -3/8, -6, 0.3, -1/4

-6, -5.2, -3/8, -1/4, 0.3

400

-12 3/4 + 6 9/10

-5 17/20

400

Multiply:

-2 2/3 x 4 5/6

Answer as a simplified mixed number.

-12 8/9

400

DOUBLE POINT QUESTION! The mean of these numbers:

7, -4, 1, -9, -6

-2 1/5

500

Identify the like terms, coefficients, and constants in this expression:

8 - 5x + 3 + 12x

like terms: 8 and 3, - 5x and 12 x

coefficients: - 5, 12

constants: 8, 3

500

DOUBLE POINT QUESTION!

Find the perimeter and area of a rectangle with sides lengths:

9, 8-12w

Perimeter: 34 - 24w

Area: 72- 108w

500

Evaluate:

-1.7 + (-5.4)+ (-x); x = 2.4

-9.5

500

-6r(-2.8r)

16.8r²

500

Simplify:

(5- 25q) divided by 10

1/2 - 5/2q