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Vocab
Properties
Expressions
Equations
Rounding and Estimating
100

Mathematical sentence with an equal sign.

Equation

100

a+11=11+a

Commutative property of addition

100

What are the coefficients?

8y +6ab +7 -3ab

8, 6, -3

100

Solve

n-7.89=21.34

n=29.23

100

Round to the nearest hundredth.

462.356

462.36
200

Numbers that are easy to divide mentally.

Compatible numbers

200

5(2x+3)= 5(2x) + 5(3)

Distributive property

200

What are the like terms?

8y + 6ab +7 -3ab

6ab, -3ab

200

-x<2

x>-2

200

Estimate using rounding

6.43-4.079

2

300

Term with no variable.

Constant

300

x+0 = x

Identity property of addition

300

What are the constants? 

4m +(-3n) +n

none

300

x/2 > -2

x>-6

300

Estimate using clustering.

3.7 + 4.02 + 4.89 + 3.98

16

400

Open sentence

Equation with one or more variables.

400

5y*1 = 5y

Identity property of mnultiplication

400

Simplify

2z+5z-3y+y

7z-2y

400

m+3.6 = 10.3

m=6.7

400

Estimate using compatible numbers.

12.89/3.04

4

500

Coefficient

Number with a variable (multiplies a variable)

500

2(5y) = (2*5)y

Associative property of multiplication

500

Simplify

6(2a-3b)

12a-18b

500
Use the formula to solve

d=rt

r=17in/s

t=50s

d=850in

500

Estimate using front-end.

2.06 + 3.91

6