Creating Scaled Copies and Estimation

The video tutorial covers the concept of making scaled copies, starting with a warm-up exercise to estimate calculations without a calculator. It then provides strategies for solving these problems and moves on to practice drawing scaled copies using an applet. The tutorial discusses operations like multiplication and division for creating scaled copies and provides examples. It concludes with a summary of the lesson and homework instructions.

What is the main focus of the warm-up exercise in the lesson?

• Making precise estimates without calculators

• Practicing standard algorithms

• Using calculators for precise calculations

• Learning new multiplication techniques

How can you estimate the product of 25 and 8.5 without calculating exactly?

• By using the standard algorithm

• By guessing the answer

• By breaking it into smaller, easier calculations

• By using a calculator

What is the purpose of rounding numbers in estimation problems?

• To make calculations more complex

• To simplify calculations and make them manageable

• To avoid using multiplication

• To ensure exact answers

When drawing a scaled copy with a scale factor of three, what should you do with the side lengths?

• Add three to each side length

• Divide each side length by three

• Multiply each side length by three

• Subtract three from each side length

What is the result of using a scale factor of one-half on a side length of 6?

• 3

• 12

• 9

• 1

Which operation did Diego use that did not produce a scaled copy?

• Multiplying by a fraction

• Adding a constant to each side

• Dividing by a whole number

• Subtracting a constant from each side

Why did Jada's method produce a correct scaled copy?

• She used subtraction

• She added a constant to each side

• She divided by a whole number

• She multiplied by a fraction

What is the key takeaway from the lesson on creating scaled copies?

• Using calculators for precision

• Adding or subtracting lengths

• Multiplying lengths by a scale factor

• Avoiding multiplication

In the cooldown exercise, what scale factor is used to create a scaled copy?

• 2

• 1/2

• 3

• 4

Which of the following is a correct method to create a scaled copy of a triangle?

• Subtracting a fixed number from each side

• Multiplying each side by the same factor

• Dividing each side by a different factor

• Adding a fixed number to each side