7 5 Unit Review on Rational Expressions

This video tutorial covers a comprehensive review of CSD Math 7 Unit 5, focusing on solving various mathematical problems. It includes using number lines for fractions, determining the truth value of expressions, calculating distances, identifying equivalent expressions, understanding bank transactions, and solving equations. The tutorial aims to prepare students for upcoming tests by providing solutions to odd-numbered problems and encouraging independent problem-solving for even-numbered ones.

What is the primary focus of the odd-numbered problems in the review session?

• To repeat the instructions for clarity

• To cover new material not included in the packet

• To assist with similar even-numbered problems

• To provide examples for all problems

On a number line divided into fifths, what is the distance from 0 to -2/5?

• One-fifth

• Two-fifths

• Four-fifths

• Three-fifths

If moving from point P two-fifths to the right ends at zero, where does point P lie?

• -4/5

• 2/5

• 0

• -2/5

How do you find the difference between two numbers on a number line?

• Multiply the two numbers

• None of the above

• Subtract the smaller from the larger

• Add the two numbers

What is the result of subtracting a negative number from a positive number?

• Zero

• The operation is undefined

• A positive number

• A negative number

What does subtracting a negative number effectively do?

• It divides the numbers

• It reduces the number to zero

• It multiplies the numbers

• It adds the numbers

Which of the following is a correct representation of a deposit in a bank?

• A subtraction from the balance

• A negative number

• None of the above

• A positive number

What does a negative balance in a bank account indicate?

• The account is new and not yet activated

• The account is overdrawn

• The account has exactly zero balance

• The account has surplus funds

In a transaction record, what does a positive transaction indicate?

• Money was withdrawn

• The account was overdrawn

• The account was closed

• Money was deposited

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

• Undefined operation

• Zero

• A negative number

• A positive number