6.8.1 Integer

6.8.1 Integer

by Mr Phillips

​Positive

• ​Greater than zero.

• ​(Negative means less than zero. Zero is neither negative nor positive.)

• ​Example: 5 is positive five.

• ​May also be written with a "+" in front, like +5

• ​positive numbers are the right of zero

​Negative

• ​Less than zero.

• ​(Positive means more than zero. Zero is neither negative nor positive.)

• ​A negative number is written with a minus sign in front

• ​Example: −5 is negative five.

• ​Negative numbers are to the left of zero

Zero

• The whole number between −1 and 1, with the symbol 0

• Shows that there is no amount.

• Example: 6 − 6 = 0 (the difference between six and six is zero)

• Zero is not positive and is also not negative.

Opposite Numbers

• ​Numbers that are in opposite positions on the number line.

• ​Such as −6 and +6

• ​Or −150 and +150

• ​When we add opposite numbers we get 0

• ​Example: adding +6 and −6 gives 0

Multiple Choice

A game show contestant gains 250 points. Choose the positive integer.

• 250

• -250

Multiple Choice

Gasoline freezes a 40 degrees below zero. Below zero indicates a number less than zero. Choose the negative integer.

• 40

• -40

​You Try it

​Write a positive or negative integer that represents each situation:

Open Ended

A hiker climbs 900 feet up a mountain.

Open Ended

You have a debt of $24

Open Ended

A student loses 5 points for not showing work on a quiz.

Open Ended

A savings account earns $10.00

Writing Intgers​

Write an intger that fits the situation​

Open Ended

A baseball is thrown at a speed of 78 miles per hour

Open Ended

A submarine is 3750 feet below sea level

Multiple Select

Which of the following numbers are integers?

• -4

• 8

• $$\frac{1}{6}$$  

• 9

• 1.75

​Real Life

• ​Pretend you are delivering flowers to an office building.

• ​You enter at the ground floor and go down two floors to make your first delivery.

• ​Then you go up seven floors to make the second delivery

Open Ended

You enter at Ground Level. Write the integer that represents the postion

Open Ended

You go down two floors. Write the integer that represents the postion

Open Ended

You go up seven floors. Write the integer that represents the postion

Self assesment​

Solve Each exercise​ on your own

Open Ended

The world record for scuba diving is 322 meters below sea level. Write an integer that represents a new world record. Explain