Evaluating Expressions: Addition and Subtraction Techniques

The video tutorial introduces algebraic expressions, explaining their components and differences from equations. It covers how to read, write, and evaluate these expressions using examples. The tutorial emphasizes understanding keywords for writing expressions and demonstrates evaluating them by substituting values, following the order of operations.

What does an algebraic expression consist of?

• Variables and constants combined with arithmetic operations

• Only variables without any arithmetic operations

• Only constants and equal signs

• Variables and constants without arithmetic operations

Tags

CCSS.6.EE.A.2B

How would you read the expression '3a'?

• Three times a

• Three plus a

• The sum of three and a

• Three divided by a

Tags

CCSS.6.EE.A.2A

What does the expression 'y minus 10' suggest?

• The sum of y and 10

• The product of y and 10

• Ten times a number y

• Ten less than a number y

Tags

CCSS.6.EE.A.2A

How is 'the product of 4 and a number' written in algebraic form?

• 4x

• 4 + x

• 4 / x

• 4 - x

Tags

CCSS.6.EE.A.2A

What does 'the sum of twelve and a number' translate to in algebraic expression?

• 12x

• 12 / x

• 12 - x

• 12 + x

Tags

CCSS.6.EE.A.2A

If 'a' is 7, what is the value of the expression '9 + a'?

• 7

• 16

• 2

• 9

Tags

CCSS.6.EE.A.2C

How do you evaluate the expression '2b' if b = 5.5?

• 5.5

• 11

• 10

• 7.5

Tags

CCSS.6.EE.A.2C

What result do you get when you divide 'c' by 3, if c = 9.3?

• 9.3

• 6.2

• 3.1

• 12.3

Tags

CCSS.5.NBT.B.7

In the expression 'x + y - z', if x = 12.4, y = 8, and z = 3.6, what is the result?

• 18.8

• 17.8

• 16.8

• 15.8

Tags

CCSS.7.NS.A.3

What is the outcome of '3z + y - x' if z = 3.6, y = 8, and x = 12.4?

• 6.4

• 9.4

• 5.4

• 7.4

Tags

CCSS.6.EE.A.2C