Multiplying Decimals with Whole Numbers

The video tutorial teaches how to multiply decimals by whole numbers using a strategy that involves treating the numbers as whole numbers initially and then adjusting for decimal places. It includes examples such as calculating the distance a sloth travels, Steve's running distance, and Jane's fish food consumption. The tutorial emphasizes checking if the final answer makes sense by considering the context of the problem.

What is the first step in the strategy for multiplying decimals by whole numbers?

• Subtract the decimal places

• Divide the numbers by 10

• Multiply the numbers as if they are whole numbers

• Add the decimal places first

How do you determine the number of decimal places in the product?

• By ignoring the decimal places in the factors

• By multiplying the decimal places in the factors

• By subtracting the decimal places in the factors

• By adding the decimal places in the factors

If a three-toed sloth travels at 0.15 miles per hour for 8 hours, how far does it travel?

• 1.2 miles

• 12 miles

• 120 miles

• 0.12 miles

Why does the initial answer of 120 miles not make sense in the sloth example?

• Because the sloth travels slower

• Because the sloth travels faster

• Because 120 is too large

• Because 120 is too small

Steve runs 4.6 miles each day for 5 days. How many miles does he run in total?

• 46 miles

• 2.3 miles

• 230 miles

• 23 miles

What is the correct way to adjust the product when multiplying 4.6 by 5?

• Move the decimal point one place to the right

• Move the decimal point two places to the left

• Move the decimal point one place to the left

• Move the decimal point two places to the right

Jane feeds her fish 0.375 ounces of food a day. How much food does the fish eat in 7 days?

• 262.5 ounces

• 0.2625 ounces

• 26.25 ounces

• 2.625 ounces

Why is the initial answer of 2625 ounces too large in Jane's example?

• Because the fish eats less

• Because the fish eats more

• Because 2625 is too large

• Because 2625 is too small

What should you always ask yourself after finding the product in these problems?

• Did I add correctly?

• Is my answer a decimal?

• Does my answer make sense?

• Is my answer a whole number?

What is the final step in the strategy for multiplying decimals by whole numbers?

• Add the products together

• Divide the products

• Move the decimal point in the product

• Subtract the products