Estimation
Percentages
Ratio
100

A judgment or opinion about the value or quality of somebody/something.

What is estimation?

100

A way of expressing a part or fraction of a whole in terms of parts per hundred.

What are percentages?

100

The relationship between two groups of people or things that is represented by two numbers showing how much larger one group is than the other.

What are ratios?

200

Rounding, speed and distance, and catching mistakes.

What are common applications of estimation?

200

Sales tax, tipping, and sales discounts.

What are common applications of percentages?

200

Baking/Cooking, In sports, Grocery Shopping.

What are common applications of Ratios?

300

A way to slightly change a number to make it easier to calculate approximate sums.

What is rounding?

300

Understanding how to get the percentage of a total amount is important and something that we must know how to do when leaving a tip.

Why are percentages important to tipping?

300

Being able to double or half a recipe. It is important to retain the ratio, otherwise the actual chemistry of the food will be changed.

How are ratios used in baking/cooking?