7.EE.1

The side length of a square (4 equal sides) is represented y the expression n - 1.5

Which are equivalent expressions for the PERIMETER of the square?

• n+n+n+n-1.5-1.5-1.5-1.5

• 2(n-1.5) + 2(n-1.5)

• 4n-1.5

• 1.5n-4

• 4(n-1.5)

Find an equivalent expression to 3(4m-2) - 2(m+5).

Write your answer as an expression with two terms.

Sam writes an expression equivalent to 8a - (-3 - 5a) - 2a.

His work is shown.

In what step does Sam make a mistake?

• Step 1

• Step 2

• Step 3

• Step 4

Explain where Sam made a mistake and what he should do to fix it.

How are you today?

If you could, what two animals would you combine? Why?

Which expression represents

"The sum of a number x and 19"

Mathematical Equivalence

ON

Answer explanation

A "sum" is an answer to an addition problem!

Tags

6.EE.2