Mastering Multiplication of Rational Numbers

The video tutorial covers the multiplication of rational numbers, emphasizing that it is simpler than addition or subtraction as it doesn't require a common denominator. It explains the process of multiplying fractions, including simplifying before multiplying, handling negative fractions, and converting mixed numbers to improper fractions. The tutorial also demonstrates finding a fraction of a whole number, using practical examples to illustrate each concept.

What is the first step in multiplying rational numbers?

• Subtract the fractions

• Add the fractions

• Multiply the numerators

• Find a common denominator

What is the result of multiplying 2/3 by 3/4?

• 1/2

• 2/3

• 3/4

• 6/12

What should you do before multiplying fractions?

• Simplify the fractions

• Convert to mixed numbers

• Add the fractions

• Find a common denominator

What is the simplified form of 2/3 * 3/4?

• 6/12

• 1/2

• 2/3

• 3/4

When multiplying negative fractions, what is the product of -5/12 and 3/8?

• -5/32

• 15/96

• 5/32

• -15/96

What is the rule for the sign of the product when multiplying a negative and a positive number?

• The product is undefined

• The product is zero

• The product is negative

• The product is positive

How do you convert a mixed number to an improper fraction?

• Add the whole number to the fraction

• Subtract the numerator from the whole number

• Multiply the whole number by the denominator and add the numerator

• Divide the whole number by the fraction

What is the improper fraction form of 1 and 2/5?

• 7/5

• 2/5

• 5/7

• 1/5

How do you find 1/3 of a whole number?

• Add 1/3 to the whole number

• Divide the whole number by 1/3

• Subtract 1/3 from the whole number

• Multiply the whole number by 1/3

What is 1/3 of 237?

• 237

• 3

• 1/3

• 79