Dividing Whole Numbers by Unit Fractions Explained

In this video, Mr. J explains how to divide whole numbers by unit fractions using the 'keep, switch, flip' method. He provides two examples: dividing 4 by 1/2 and 3 by 1/5. The video includes a step-by-step explanation of each example, demonstrating how to convert division into multiplication and flip the second fraction. Mr. J also uses visual models to illustrate the process and offers links to additional resources for further learning.

What is the first step in dividing a whole number by a unit fraction?

• Flip the second fraction

• Switch the division sign to multiplication

• Keep the first number the same

• Multiply straight across

What does 'flip' refer to in the context of dividing by a fraction?

• Converting the whole number to a fraction

• Reversing the order of the numbers

• Changing the division sign to multiplication

• Inverting the second fraction

Tags

CCSS.6.NS.A.1

After dividing 4 by 1/2, what is the result?

• 8

• 6

• 4

• 2

Tags

CCSS.5.NF.B.7B

CCSS.5.NF.B.7C

What does the 'keep' step involve in dividing whole numbers by fractions?

• Keeping the division sign

• Keeping the first number or fraction as is

• Keeping the multiplication sign

• Keeping the second number or fraction as is

In the 'switch' step, what change is made to the division problem?

• The fractions are switched

• The division sign is switched to multiplication

• The division sign is switched to addition

• The numbers are switched

Tags

CCSS.7.NS.A.2B

Why does dividing a whole number by a fraction less than one result in a larger number?

• Because the whole number increases in value

• Because the fraction represents division into more parts

• Because you are multiplying instead of dividing

• Because you are dividing by a smaller number

Tags

CCSS.5.NF.B.7B

CCSS.5.NF.B.7C

How many pieces do you get when dividing four wholes into halves?

• 10 pieces

• 4 pieces

• 8 pieces

• 6 pieces

Tags

CCSS.1.G.A.3

What visual model is used to explain the division of whole numbers by unit fractions?

• Rectangles

• Squares

• Number line

• Circles

Tags

CCSS.3.OA.A.2

What is the result of dividing 3 by 1/5?

• 2/5

• 3/5

• 5

• 15

Tags

CCSS.5.NF.B.7B

CCSS.5.NF.B.7C

How many pieces are there when each of three wholes is divided into fifths?

• 5 pieces

• 15 pieces

• 20 pieces

• 10 pieces

Tags

CCSS.1.G.A.3