Multiplying Decimal Numbers by 1-Digit Numbers Tutorial

The video tutorial explains how to perform short multiplication with decimal numbers. It provides step-by-step examples, including multiplying 5 by 4.3, 3 by 5.24, and 4 by 1.346. The tutorial emphasizes the importance of aligning numbers correctly and handling decimal points by initially ignoring them and treating numbers as whole numbers. After calculating, the decimal point is placed back in the result by counting the decimal places in the factors. The video concludes with practice problems for viewers to solve.

What is the first step in solving 5 * 4.3 using short multiplication?

• Divide 4.3 by 5 first.

• Add a zero to 4.3 and multiply.

• Ignore the decimal and multiply 5 by 43.

• Multiply 5 by 4.3 directly.

How many decimal places should the answer have in the multiplication of 3 * 5.24?

• One decimal place

• No decimal places

• Two decimal places

• Three decimal places

In the multiplication of 4 * 1.346, what is the result before adjusting the decimal point?

• 538.4

• 53.84

• 5.384

• 5384

What is the correct answer for 6 * 5.3?

• 31.8

• 3180

• 318

• 3.18

How do you adjust the decimal point after multiplying 3 * 7.25?

• Do not move the decimal.

• Move the decimal three places to the left.

• Move the decimal one place to the right.

• Move the decimal two places to the left.

What is the final answer for 4 * 1.823?

• 729.2

• 0.7292

• 7.292

• 72.92

What is the inverse operation used to adjust the answer after multiplying by a power of 10?

• Multiplication

• Subtraction

• Division

• Addition