Exploring Rational Expressions: Addition and Subtraction

The video tutorial explains the concept of percentages by dividing objects into 100 equal parts, where each part represents 1% of the whole. It uses a rectangle and an apple as examples to demonstrate how to calculate percentages. The tutorial shows that 17 out of 100 pieces represent 17% and 50 out of 100 pieces represent 50%, which is equivalent to half. It further illustrates the calculation by determining that 1% of a 200g apple weighs 2g. The video concludes by reinforcing the understanding of percentages as dividing an object into 100 equal parts.

What is each piece called when a rectangle is divided into 100 pieces?

• 1/10 of the rectangle

• 1% of the whole

• 1/100 of the whole

• 1% of the rectangle

If 17 pieces out of 100 are taken, what percentage of the whole is that?

• 70%

• 7%

• 1.7%

• 17%

What percentage of the whole is represented by shading 50 pieces out of 100?

• 25%

• 75%

• 50%

• 100%

What is the weight of the apple used in the example?

• 100 grams

• 150 grams

• 250 grams

• 200 grams

How many pieces would the apple need to be cut into to find 1% of its weight?

• 100 pieces

• 200 pieces

• 50 pieces

• 10 pieces

What is the weight of 1% of the apple?

• 10 grams

• 1 gram

• 2 grams

• 5 grams

What is the final conclusion about percentages?

• Each piece is 0.1% when an object is divided into 100 pieces.

• Each piece is 10% when an object is divided into 100 pieces.

• Each piece is 1% when an object is divided into 100 pieces.

• Each piece is 5% when an object is divided into 100 pieces.