Understanding Order of Operations in Math

The video tutorial addresses a commonly missed math problem: calculating 5 plus 20 divided by one-half. It begins by setting up the expression and explains that dividing by a fraction is equivalent to multiplying by its reciprocal. The tutorial emphasizes the importance of following the order of operations, which dictates multiplying and dividing before adding and subtracting. The expression simplifies to 5 plus 40, resulting in a final answer of 45.

What is the initial mathematical expression presented in the problem?

• 5 divided by 20 plus one-half

• 5 times 20 divided by one-half

• 5 plus 20 divided by one-half

• 5 plus 20 times one-half

Tags

CCSS.6.NS.A.1

How do you convert division by a fraction into a multiplication problem?

• Multiply by the same fraction

• Multiply by the reciprocal of the fraction

• Divide by the reciprocal of the fraction

• Add the reciprocal of the fraction

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

What is the reciprocal of one-half?

• One

• Four

• Two

• One-half

Tags

CCSS.5.OA.B.3

What is the result of multiplying 20 by 2 in the expression?

• 20

• 22

• 40

• 42

Tags

CCSS.7.NS.A.3

What is the final result of the expression 5 plus 20 divided by one-half?

• 45

• 25

• 30

• 40

Tags

CCSS.7.NS.A.3