Multiplying Whole Numbers and Decimals

This video tutorial prepares students for the Unit 4 test by covering five key objectives. It explains how to multiply whole numbers and decimals by powers of 10, using both exponents and non-exponents. The video also demonstrates strategies for multiplying multi-digit whole numbers, such as the box method, and emphasizes the importance of understanding decimal placement in multiplication. Finally, it applies these skills to solve real-world story problems, ensuring students can label their answers correctly.

What is the main purpose of this video?

• To provide entertainment

• To introduce new mathematical concepts

• To review previous units

• To prepare students for the unit 4 test

How many test objectives are covered in this video?

• Three

• Six

• Five

• Four

When multiplying 400 by 80 without exponents, what is the result?

• 320,000

• 32,000

• 320

• 3,200

What is the result of 56 multiplied by 10 to the power of 1?

• 56

• 56,000

• 5,600

• 560

How many zeros are added when multiplying 56 by 10 to the power of 2?

• Two

• One

• Three

• Four

What strategy is used to multiply multi-digit whole numbers in this video?

• Box strategy

• Lattice method

• Traditional algorithm

• Mental math

In the box strategy, what is the result of multiplying 9 by 5?

• 50

• 45

• 40

• 35

What is the final product of adding the partial products 4500, 1880, 208, and 8?

• 4,900

• 4,800

• 5,000

• 4,888

When multiplying 610 by 10 to the first power, how does the decimal move?

• To the right twice

• To the left twice

• To the right once

• To the left once

What is the result of 610 multiplied by 10 to the power of 2?

• 6.10

• 61

• 6,100

• 60