Dividing Rational Numbers in 7th Grade Math

The video tutorial covers dividing rational numbers, focusing on the zero triangle method to determine the sign of the quotient. It explains how the placement of negative signs does not affect the quotient's value. The tutorial includes practical examples, such as monthly bill calculations, and introduces complex fractions. It emphasizes that a negative divided by a positive is negative, and a negative divided by a negative is positive. The video concludes with practice problems to reinforce the concepts.

What is the zero triangle method used for?

• Subtracting rational numbers

• Multiplying rational numbers

• Dividing rational numbers

• Adding rational numbers

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CCSS.7.NS.A.1C

What is the result of 12 divided by -4?

• -3

• 3

• 4

• -4

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

If you have a positive number divided by a negative number, what is the sign of the result?

• Zero

• Undefined

• Positive

• Negative

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

Does the placement of the negative sign in a division problem affect the quotient?

• Yes, it does

• Only if the negative sign is in the denominator

• Only if the negative sign is in the numerator

• No, it does not

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

What is the result of dividing a negative number by another negative number?

• Positive

• Undefined

• Negative

• Zero

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

If you wrote five checks totaling $532.375 over five months, what is the monthly withdrawal?

• $64.75

• $106.475

• $42.56

• $53.2375

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CCSS.6.NS.B.3

What is the average change in elevation per minute if a driver descended 42.56 feet in 11.2 minutes?

• 4.2 feet per minute

• 3.8 feet per minute

• 3.6 feet per minute

• 4.0 feet per minute

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CCSS.6.NS.B.3

What is the result of dividing 7/10 by -1/5?

• -7/2

• 7/2

• -1/2

• 1/2

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CCSS.7.NS.A.2B

How many bags can Maya fill if she divides 3/4 pound into bags each holding 1/12 pound?

• 12

• 9

• 8

• 6

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CCSS.6.NS.A.1

What is the result of dividing -5/8 by -6/7?

• 35/48

• -48/35

• -35/48

• 48/35

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CCSS.7.NS.A.2B