Mastering Multiplication and Division of Rational Numbers

Samantha Stockwell starts her new job with a task to multiply numbers in red boxes and divide numbers in blue boxes. She successfully multiplies and divides, understanding the rules of handling negative signs. However, she encounters a challenge with the green box, which contains a zero, making division impossible. Realizing the task is undefined, she concludes her day with a sense of accomplishment.

What is Samantha's main task in the stockroom?

• Ignore the numbers in the green box.

• Multiply numbers in red boxes and divide numbers in blue boxes.

• Organize the numbers alphabetically.

• Count all the numbers.

What numbers did Samantha find in the first red box?

• 2, 4, -1, -3

• 3, -4, 2, -1

• 1, 3, -2, -5

• 5, -6, 7, -8

Tags

CCSS.7.NS.A.1B

What is the product of the numbers 1, 3, -2, and -5 ignoring the negative signs?

• 15

• 30

• 60

• 120

Tags

CCSS.7.NS.A.2A

How does Samantha determine the sign of the product in the red box?

• By adding the numbers.

• By dividing the numbers.

• By counting the negative signs.

• By checking the largest number.

Tags

CCSS.7.NS.A.2A

What is the final answer for the first red box calculation?

• 60

• 30

• -60

• -30

Tags

CCSS.7.NS.A.1C

What is the product of the numbers -3, -4, and -10?

• 120

• -120

• -60

• 60

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

What are the numbers Samantha finds in the blue box?

• -25 and -3

• -20 and -4

• -15 and -2

• -10 and -5

Tags

CCSS.7.NS.A.1B

What is the result of dividing -15 by -2?

• 15/2 (positive)

• 7.5

• -7.5

• 15/2

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

What does Samantha find in the green box?

• A positive number.

• A hundred numbers.

• A zero.

• A negative number.

Tags

CCSS.6.NS.C.5

What does Samantha write in the log for the green box?

• Error

• Undefined

• Infinity

• Zero

Tags

CCSS.6.RP.A.3D