Describe situations where two quantities make zero

Front

Describe situations in which opposite quantities combine to make 0.

Back

Gaining 10 and losing 10 yards in football.

Front

If you have $20 dollars, how much do you have to spend to get to zero dollars?

Back

$20 (subtract $20).

Front

If the sea level goes up 3 feet, it has to go down how many feet to get back to regular sea level?

Back

-3.

Front

Brr! It's really cold! It was 7 degrees outside but now it's only 0! How much did it go down?

Back

-7.

Front

If we are down by 10 yards, how many more yards do we need to get back to zero?

Back

10.

Front

What is the concept of zero-sum in mathematics?

Back

A situation where one quantity's gain is exactly balanced by another's loss.

Front

Define 'opposite quantities'.

Back

Quantities that have the same magnitude but different signs, such as +5 and -5.

Front

What does it mean to 'subtract' in terms of making a quantity zero?

Back

To remove a quantity from another, resulting in zero when they are equal.

Front

How can temperature changes illustrate the concept of making zero?

Back

A temperature drop from 5 degrees to 0 degrees represents a decrease of 5 degrees.

Front

What is an example of a financial transaction that results in zero balance?

Back

Spending the exact amount of money you have.