Unit 2 Practice

Front

What is a rational number?

Back

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero. Examples include -0.75, 1/2, and 3.

Front

How do you find half of a fraction?

Back

Front

What does a negative number indicate in a recipe?

Back

A negative number in a recipe indicates a reduction or removal of an ingredient. For example, -0.5 cups of oil means you are reducing the amount of oil by half a cup.

Front

How do you calculate total change when removing quantities?

Back

To calculate total change when removing quantities, add the negative values together. For example, if you have -0.5 liters and remove another -0.25 liters, the total change is -0.5 + (-0.25) = -0.75 liters.

Front

What is the formula to calculate total change in depth?

Back

Total change in depth can be calculated by multiplying the rate of descent by the time. For example, if a diver descends at -2.5 meters per second for 1.2 seconds, the total change is -2.5 * 1.2 = -3.0 meters.

Front

What is the result of adding two negative numbers?

Back

Adding two negative numbers results in a more negative number. For example, -0.5 + (-0.25) = -0.75.

Front

How do you express a decrease in volume?

Back

A decrease in volume is expressed with a negative number. For example, if a container has -0.5 liters of water, it indicates a decrease of 0.5 liters.

Front

What is the significance of the denominator in a fraction?

Back

Front

How do you convert a fraction to a decimal?

Back

Front

What does it mean to make a recipe larger or smaller?

Back

Making a recipe larger means increasing the quantities of ingredients, while making it smaller means decreasing the quantities. For example, halving a recipe means using half of each ingredient.