Integers (Rational Numbers) What we know.

Integers (Rational Numbers) What we know.

A review of important skills.

Vocabulary:

Rational Numbers: Numbers and their opposites.

Using a rational number and it's opposite will result in 0. Everytime.

• Positive integers: integers located on the right side. It is more than zero.

• Negative integers: integers located on the left side. It is less than zero.

Multiple Select

Identify which words that mean negative or that would be on the left side of the number line. Pick all that apply.

• debit

• increase

• below level

• on level

• withdraw

Multiple Select

Identify which words that define positive integersor that would be on the left side of the number line. Pick all that apply.

• credit

• decrease

• profit

• accelearate

• descend

Poll

True or false: Absolute Value - the distance a number is from 0. The absolute value is always positive.

• True

• False

Additive inverse:

the additive inverse of a number a is the number that, when added to a, yields zero

Example: 5 + (-5) = 0. -100+ 100 =0

Multiple Choice

When adding two positive integers the answer will always be

• negative

• positive

Multiple Choice

Why is the absolute value of a nonzero number positive?

• Distance between itself and zero is never negative
• Sir Larry said so
• If you take two positives...put them together....add some cheerios...know what I mean Sir Larry?
• You tried to trick us Sir Larry. Absolute value is always negative. 

Multiple Choice

Fill in the blank with the correct sign:  <, > or =.
4 ____ -2

• <
• >
• =

Multiple Choice

What is the fraction equivalent of 40%?

• 4/100
• 2/5
• 2/50
• 40/1000

Multiple Choice

What is 1/5 as a percent?

• 1.5%
• 20%
• 10%
• 50%

Multiple Choice

When adding two negative the answer will always be

• positive

• negative

Multiple Choice

The temperature was 5.5° C on Monday and was 7.3 degrees lower the next day. What was the temperature on Tuesday?

• -2.3* C

• 12.5* C

• -1.8* C

• 1.8* C

Multiple Choice

What is -15 + 4?

• -19

• 19

• 11

• -11

Multiple Choice

The temperature on Sunday was -15^o C.  The temperature on Monday was 12 degrees less than the temperature on Sunday.  What was the temperature on Monday? 

• -27^o C
• 27^o C
• -3^o C
• 3^o C

Multiple Choice

What is the absolute value of -4

• 4
• -4
• 16
• 24

Multiple Choice

A deposit of $20

• +20
• -20

Multiple Choice

2 + |-3|

• -1
• 1
• 5
• -6