Dividing Whole Numbers by Fractions

The video tutorial explains how to divide whole numbers by unit fractions. It begins with an introduction to unit fractions, emphasizing that the numerator is always one. The tutorial uses models, such as rectangles and number lines, to demonstrate how many unit fractions fit into a whole number. The video also introduces the standard algorithm 'Keep Change Flip' to solve division problems involving unit fractions, highlighting the inverse relationship between division and multiplication.

What is a unit fraction?

• A fraction with both numerator and denominator as one.

• A fraction with a numerator greater than the denominator.

• A fraction with a denominator of one and any numerator.

• A fraction with a numerator of one and any denominator.

How many one-thirds fit into the whole number 4 using the rectangle model?

• 8

• 10

• 14

• 12

When using a number line, how many jumps of one-third are needed to cover the number 4?

• 10

• 11

• 12

• 13

What is the first step in the standard algorithm for dividing whole numbers by unit fractions?

• Change the division symbol to multiplication.

• Flip the fraction.

• Add the numbers.

• Keep the first number.

What does the 'Keep Change Flip' method involve?

• Keeping the operation, changing the fraction, flipping the number.

• Keeping the first number, changing the operation, flipping the fraction.

• Keeping the number, changing the fraction, flipping the operation.

• Keeping the fraction, changing the number, flipping the operation.

What is the inverse operation of division?

• Addition

• Exponentiation

• Multiplication

• Subtraction

In the 'Keep Change Flip' method, what do you do with the division symbol?

• Change it to subtraction.

• Change it to multiplication.

• Change it to addition.

• Keep it the same.

Why does the 'Keep Change Flip' method work?

• Because it keeps the numbers the same.

• Because it uses the inverse operation of division.

• Because it simplifies the fraction.

• Because it changes the operation to addition.

What is the result of 4 divided by one-third using the standard algorithm?

• 14

• 10

• 8

• 12

What is the purpose of the 'Keep Change Flip' method?

• To subtract fractions from whole numbers.

• To add fractions easily.

• To divide whole numbers by fractions.

• To multiply fractions by whole numbers.