Mastering Order of Operations with Rational Numbers

The video tutorial covers the order of operations with rational numbers, focusing on converting decimals to fractions and solving problems using both fractions and decimals. It includes examples demonstrating these methods, emphasizing the ease of using fractions over decimals in most cases.

What is the main topic discussed in the video?

• Order of operations with rational numbers

• Properties of exponents

• Solving quadratic equations

• Graphing linear equations

When dealing with rational numbers, which form is generally easier to work with?

• Mixed numbers

• Fractions

• Whole numbers

• Decimals

How do you convert 0.85 to a fraction?

• 85/1, which reduces to 85

• 85/1000, which reduces to 17/200

• 85/10, which reduces to 17/2

• 85/100, which reduces to 17/20

What is the first step in solving the expression 1/2 + 1/4 squared divided by 0.25?

• Divide by 0.25

• Add 1/2 and 1/4

• Square 1/4

• Change 0.25 to 1/4

What is the result of 3/4 squared?

• 3/8

• 3/16

• 1/2

• 9/16

How do you simplify 2 1/2 to an improper fraction?

• 5/2

• 4/2

• 7/2

• 3/2

What is the sum of 1/4 + 1/4?

• 1/2, which reduces to 1/4

• 2/4, which reduces to 1/2

• 4/4, which reduces to 1

• 3/4, which reduces to 1/2

What is the product of 6.25 and -1.5?

• -9.375

• 7.875

• 9.375

• -7.875

How do you handle the division of decimals in the expression -4.2 divided by 0.7?

• Make the divisor a whole number by moving the decimal point

• Multiply the numbers

• Directly divide the numbers

• Convert to fractions first

What is the final result of -90.375 + (-6)?

• -84.375

• -96.375

• -90.375

• -96.875