The Category Category
Absolutely!
Brain Surgery
Temperature and Elevation
Opposites Attract
100

The smallest Natural (counting) number.

What is 1?

100

|3|=

What is 3?

100

-3 + (-9)

What is -12?

100

The height of a squirrel 1 foot up a tree written as an integer.

What is 1?

100
What do we call these numbers?

-18 and 18

Additive Inverses
200

The smallest number in this category is 0.

What is Whole Numbers?

200

|-15.6|=

What is 15.6?

200

6 + (-14)=

What is -8?

200

The elevation of a seahorse under the sea 75 feet written as an integer.

What is -75?

200

Does this scenario show additive inverses?

Jane bought five candy canes and then gave five candy canes away.

Yes!  Now Jane has zero candy canes.

300

All whole numbers and their opposites.

What are integers?
300

|3-7|=

What is 4?

300

-6 (-8) =

What is 48?

300

An expression that represents the distance between a robin flying 13 feet above the ground and a mole 2 feet below the ground.

What is 13 -(-2)?

300
Does this scenario show additive inverses?

Jimmy owed his mom $140.  He sold some baseball cards and earned $135.40.

No.  Jimmy still owes his mom $4.60.
400

These numbers can be represented as a ratio of two integers.

What are rational numbers?
400
What absolute value expression could equal the distance between -3 and 2?

What are loads of answers...

400

-9 8 =

What is -72?

400

The distance between the robin flying 13 feet above ground and a mole 2 feet below ground.

What is 15?

400

Does this scenario show additive inverses?

Louis walked south 18 miles, then he turned 90 degrees and walked 18 miles.

Nope!  Louis would have needed to have turned 180 degrees to be walking in the opposite direction.
500

This category includes the number pi (or pie if you're feeling hungry).

What are irrational numbers?
500

|-5-5|=|-15-(-5)|=

What is 10?

500

-7 - (-9) =

What is 2?

500

The temperature this morning was 25 degrees. During the day, it drops 4 degrees per hour for 7 consecutive hours.  

The temperature is now ____ degrees.  

Represent this temperature change on a vertical number line (thermometer).

What is -3 degrees?

Also, I hope your vertical number lines are awesome.

500

Does this scenario show additive inverses?

Francois sailed north 27 latitude.  Then he turned his boat around and sailed south 15 latitude.  A storm pushed blew him north 8 latitude, then he sailed south 21 latitude.

Nope.  Francois sailed south one more latitude than the sailed north.

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