Mastering Order of Operations with Rational Numbers

The video revisits the order of operations, focusing on problems involving rational numbers, including whole numbers, fractions, and decimals. It reviews the PEMDAS rule and demonstrates solving various problems by converting between decimals and fractions. The video emphasizes the importance of following the order of operations and provides multiple examples to illustrate the process.

What types of numbers will you encounter in order of operations problems in this lesson?

• Whole numbers, fractions, and decimals

• Decimals only

• Fractions only

• Whole numbers only

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

• Add or subtract from left to right

• Multiply or divide from left to right

• Perform operations inside parentheses

• Evaluate exponents

If you have both multiplication and division in a problem, how should you proceed?

• Perform the operation that comes first from left to right

• Always divide first

• Always multiply first

• Perform the operation that comes last from left to right

In the problem 1.4 + 0.5 * 2.2, which operation should be performed first?

• Addition

• Subtraction

• Multiplication

• Division

What is the decimal equivalent of 1/2?

• 0.2

• 0.75

• 0.5

• 0.25

How do you handle a division problem where both the dividend and divisor are decimals?

• Round both numbers to the nearest whole number

• Ignore the decimals

• Convert both to fractions

• Move the decimal point to make the divisor a whole number

What is the result of 2.8 divided by 1.4?

• 2.2

• 2

• 1.2

• 1.4

When solving 4 - 2.9 + 2.8 / 1.4, what is the first step?

• Subtract 2.9 from 4

• Add 2.8 to 4

• Divide 2.8 by 1.4

• Add 2.8 to 2.9

What is the final answer to the problem 4 - 2.9 + 2.8 / 1.4?

• 1.1

• 3.1

• 2.1

• 4.1

What is the decimal equivalent of 1/5?

• 0.2

• 0.25

• 0.1

• 0.5