7/8 grade review

Basic Operations

100

98 x 8

What is 784?

200

112 x 45

What is 5040?

300

240 + 932

1,172

400

602,564 - 129,875

What is 472,689?

500

56x47

What is 2,632?

600

555 + 222 - 333 =

What is 444?

Equations

100

Solve For X

2X=14

x=7

200

8 + c = 10

c = 2

300

2x= 10

5

400

 3x = 15

X=5

500

y - 6 = 12

y = 6

600

y - 7 = 9

y = 16

Vocab

100

Name 3 prime numbers.

Teacher decides...

200

An unknown amount, often shown by a letter such as x, n, y, or b.

variable

300

This operation shows repeated multiplication and has a little number that is up high on the right-hand side.

exponents

400

The top number of a fraction

numerator

500

The bottom number in a fraction.

What is a denominator?

600

This is a number sentence that includes numbers, variables, operations and has an equal sign =.

a) expression     b) equation

equations have an equal sign