Dividing with Decimals: Key Concepts and Techniques

Mr. Davis introduces division with decimals, emphasizing its importance in real-life applications like calculating unit prices. He explains key terms such as divisor, dividend, and quotient, and demonstrates operations with decimals. The video provides detailed steps for dividing with decimals, including making the divisor a whole number and adjusting the dividend's decimal. Mr. Davis works through example problems and concludes with a recap and encouragement to practice.

Why is it important to learn how to divide with decimals?

• To make multiplication easier.

• To avoid using long division.

• To understand unit price calculations.

• Because calculators are always available.

What is the number inside the 'house' in a division problem called?

• Divisor

• Quotient

• Dividend

• Remainder

What is the result of a division problem known as?

• Divisor

• Dividend

• Quotient

• Remainder

When adding decimals, what is the key difference compared to adding whole numbers?

• The digits change.

• The numbers are multiplied instead.

• The decimal point must be aligned.

• The decimal point is ignored.

In subtraction with decimals, what remains the same as in subtraction with whole numbers?

• The decimal point is ignored.

• The digits change.

• The decimal point must be aligned.

• The numbers are added instead.

What is the first step in dividing with decimals?

• Perform long division.

• Move the decimal in the divisor to make it a whole number.

• Move the decimal back after division.

• Move the decimal in the dividend.

How many times should you move the decimal in the dividend?

• Only once.

• You don't move the decimal in the dividend.

• Twice as many times as in the divisor.

• The same number of times as in the divisor.

What is the quotient of 46.2 divided by 2.1?

• 21

• 22

• 23

• 24

What should you do if the divisor is not a whole number?

• Move the decimal in the divisor to make it a whole number.

• Ignore the decimal.

• Perform the division without any changes.

• Move the decimal in the dividend twice.

What happens if a pattern forms in the quotient during long division with decimals?

• You stop the division.

• You ignore the pattern.

• You draw a bar over the repeating number.

• You move the decimal back.