Understanding Signs and Parentheses in Mathematical Expressions

The video tutorial explains how to handle mathematical expressions involving parentheses and different signs. It covers the rules for dealing with different and same signs, repeating numbers, summing with same signs, and subtracting with different signs. The tutorial concludes with a discussion on adding opposite numbers, which results in zero.

What is the first step in simplifying an expression with parentheses?

• Add all the numbers first

• Eliminate the parentheses

• Multiply the numbers

• Divide the numbers

Tags

CCSS.7.NS.A.1C

If the signs inside and outside the parentheses are different, what is the result?

• The result is the same as the sign inside the parentheses

• The result is negative

• The result is zero

• The result is positive

Tags

CCSS.7.NS.A.1C

When both signs are the same, what should you do?

• Change the sign to negative

• Ignore the signs

• Subtract the numbers

• Add the numbers and keep the sign

Tags

CCSS.7.NS.A.1B

What is the result when adding two opposite numbers?

• The result is the larger number

• The result is zero

• The result is the smaller number

• The result is always positive

Tags

CCSS.7.NS.A.1C

How do you determine the sign when subtracting numbers with different signs?

• Always use a negative sign

• Use the sign of the smaller number

• Always use a positive sign

• Use the sign of the larger number

Tags

CCSS.7.NS.A.1C