7th Grade Math Unit 1 Review: Adding and Subtracting Rational Expressions

This video tutorial covers the multiplication and division of integers, decimals, and fractions. It begins with multiplying integers using the triangle face method, followed by multiplying decimals and handling decimal places. The tutorial then explains multiplying positive and negative fractions. The latter part of the video focuses on dividing integers, decimals, and fractions, providing practice problems and solutions throughout.

What is the result of multiplying a positive and a negative integer?

• 30

• -30

• -60

• 0

Tags

CCSS.7.NS.A.2A

What is the product of -3, -2, and 5?

• 10

• -10

• 30

• -30

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

How do you adjust the decimal place when multiplying decimals?

• Move it to the right

• Depends on the operation

• No adjustment needed

• Move it to the left

Tags

CCSS.5.NBT.B.7

How do you simplify 4 over 3 when multiplying fractions?

• 1 1/3

• 2/3

• Cannot be simplified

• 4/3 as is

Tags

CCSS.5.NF.B.6

What is the simplified form of 6 over 40 when multiplying fractions?

• 6/40

• 1/6

• 1/5

• 3/20

Tags

CCSS.5.NF.B.6

What is the result of multiplying -1/3 by 4?

• 4/3

• -4/3

• 1 1/3

• -1 1/3

Tags

CCSS.7.NS.A.2A

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

• Negative

• Positive

• Undefined

• Zero

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

What happens to the sign when dividing two negative numbers?

• Becomes zero

• Undefined

• Becomes positive

• Remains negative

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

What is the outcome when dividing -50 by 5?

• 0

• 10

• -5

• -10

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

How do you handle a decimal divisor in division?

• Adjust the divisor to a whole number

• Divide as is

• Multiply by 10

• No adjustment needed

Tags

CCSS.5.NBT.B.6

CCSS.6.NS.B.2