Mastering Order of Operations with Rational Numbers

This video tutorial covers the order of operations using rational numbers, including whole numbers, fractions, and decimals. The instructor reviews the PEMDAS method, which stands for Parentheses, Exponents, Multiplication and Division (left to right), and Addition and Subtraction (left to right). Several examples are provided to demonstrate how to apply these operations with rational numbers, emphasizing the importance of showing work, especially when dealing with decimals and fractions. The tutorial concludes with a reminder to follow the order of operations and simplify answers where possible.

What types of numbers are included in rational numbers?

• Whole numbers and integers

• Integers and irrational numbers

• Whole numbers, fractions, and decimals

• Fractions and decimals

What is the first step in the order of operations according to PEMDAS?

• Evaluate exponents

• Do addition and subtraction

• Perform operations inside parentheses

• Do multiplication and division

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

In PEMDAS, how should multiplication and division be performed?

• In any order

• After addition and subtraction

• From right to left

• From left to right

Tags

CCSS.7.NS.A.3

What is the result of 0.5 times 2.2?

• 2.5

• 2.2

• 1.1

• 1.0

Tags

CCSS.6.NS.B.3

What is the final answer to the problem 5.1 + 3.9 - 6.8?

• 5.2

• 4.2

• 2.2

• 3.2

Tags

CCSS.5.NBT.B.7

How do you convert a whole number to a fraction for multiplication?

• Subtract 1 from the number

• Place the number over 1

• Add 1 to the number

• Multiply the number by 2

What is the simplified form of 10 divided by 22?

• 1/2

• 10/11

• 5/11

• 5/22

What is the result of 7 minus 5?

• 3

• 2

• 1

• 4

Tags

CCSS.2.OA.A.1

What is the common denominator for 14/1 and 3/2?

• 28

• 2

• 14

• 1

What is the final answer to the problem 25/2 - 9/2?

• 7

• 10

• 9

• 8

Tags

CCSS.7.NS.A.1C