Mr. Tenzer's mustache is awesome!

Writing Expressions

100

The sum of a number and 9

What is (x + 9)?

200

The product of a number and 6

What is 6x?

300

15 divided by a number

15/x

400

Twice a number decreased by 7

What is (2x - 7)?

500

4 times a number divided by the same number.

4x/x

Writing and solving expressions

100

Four more than a number is 10

4+x=10

-4    -4

_______

x=6

200

four times a number is twelve

4x=12

_____

4      4

x=3

300

A number decreased by seven is three

x-7=3

x=10

400

The product of eight and a number is sixteen

8x=16

x=2

500

Nine less than a number is 19

x-9=19

x=27

Operations

100

What operation comes to mind when you hear add, or sum, or plus?

Addition

+

200

What operation comes to mind when you hear words like difference, less than or fewer?

Subtraction

-

300

What operation comes to mind when you hear the word SPLIT?

Divide

400

If your are TWICE as old as your little sister, what operation would you use to find your age?

Multiplication

500

What is the inverse operation to Multiplication?

Division