In this video, Mr. J explains how to divide a whole number by a fraction using the 'keep, switch, flip' method, also known as multiplying by the reciprocal. He demonstrates this method with two examples: dividing 2 by 1/4 and 7 by 2/5. The video provides a clear, step-by-step guide to solving these problems, including converting improper fractions to mixed numbers. The video concludes with a recap of the method and encourages viewers to practice the technique.

What are the three steps to remember when dividing a whole number by a fraction?

• Add, Subtract, Multiply

• Flip, Keep, Subtract

• Keep, Switch, Flip

• Divide, Multiply, Add

What is the reciprocal of 1/4?

• 4

• 1/4

• 4/1

• 1

Tags

CCSS.3.NF.A.3C

When rewriting a whole number as a fraction, what should you place it over?

• 0

• 3

• 1

• 2

Tags

CCSS.5.NF.B.7B

CCSS.5.NF.B.7C

What is the result of 2 divided by 1/4?

• 2

• 4

• 8

• 1/8

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

In the second example, what is the first step after keeping the whole number?

• Divide the fractions

• Switch to multiplication

• Add the fractions

• Subtract the fractions

What is the improper fraction result of 7 divided by 2/5?

• 7/10

• 14/5

• 5/2

• 35/2

Tags

CCSS.4.NBT.B.6

How many whole groups of 2 are in 35?

• 18

• 19

• 17

• 16

What is the mixed number form of 35/2?

• 18 and 1/2

• 17 and 1/2

• 17 and 2/5

• 16 and 1/2

What should you always check for in the fractional part of a mixed number?

• If it is negative

• If it is improper

• If it is simplified

• If it is a whole number

Tags

CCSS.7.NS.A.2C

What is another name for the 'Keep, Switch, Flip' method?

• Multiplying by the reciprocal

• Adding the inverse

• Subtracting the reciprocal

• Dividing by the inverse

Tags

CCSS.7.NS.A.2C