Exploring Multiplying Rational Numbers in Pre-Algebra

What is a rational number?

• A number that is always a decimal

• A number that cannot be written as a fraction

• A number that is always an integer

• A number that can be written as a fraction

What is the product of 1/3 and 1/2?

• 1/5

• 1/6

• 1/4

• 1/3

Tags

CCSS.5.NF.B.6

When multiplying fractions, what is the first step in the cross-canceling method?

• Multiply the numerators

• Multiply the denominators

• Simplify the fractions

• Look at the diagonals to simplify

Tags

CCSS.5.NF.B.6

What is the simplified form of 1/6 times 2/3?

• 1/3

• 1/6

• 2/9

• 1/9

Tags

CCSS.5.NF.B.6

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

• Add the whole number to the numerator and multiply by the denominator

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

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

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

What is the product of 3/4 and -7/9?

• -7/9

• -7/12

• -21/36

• -21/28

Tags

CCSS.7.NS.A.2A

What is the simplified form of 6/9 times -3/11?

• -1/3

• -2/9

• -1/6

• -2/11

Tags

CCSS.7.NS.A.2A

How do you evaluate the expression 1/2 * a * b if a = 6/7 and b = -4/9?

• -2/7

• -4/21

• -1/3

• -1/6

Tags

CCSS.7.NS.A.2A

What is the height of the second roller coaster if the first is 255 feet tall and the second is 11/20 as tall?

• 150.75 feet

• 140.25 feet

• 120.25 feet

• 130.50 feet

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

If the Willis Tower is 1450 feet tall and the Empire State Building is 4/5 as tall, how tall is the Empire State Building?

• 1100 feet

• 1300 feet

• 1200 feet

• 1160 feet

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C