7 Math Unit 1 Review

Rational/Non-Rational

100

Is this number rational or not rational? WHY?

0.939339333...

Not rational because it goes on forever but does NOt have a pattern

200

Is this number rational or not rational? WHY?

27.125

Yes because it terminates/ends

300

Write this number as a decimal.

4/9

0.444...

400

Write this number as a decimal.

4/11

0.363636...

500

Write this number a decimal.

-17/5

-3.4

Adding

100

6 + (-4) = ?

2

200

-12 + (-3) = ?

-15

300

10 + (-63) = ?

-53

400

-2.63 + 3.25 = ?

0.62

500

-1.7 + (-3 1/5) = ?

-4.9 or -4 9/10

Subtrating

100

2 - (-4) = ?

6

200

-7 - 11 = ?

-18

300

-17 - 44 = ?

-61

400

-1/4 - 3/4 = ?

-1

500

-4 1/2 - (-1.07) = ?

-3.43

Multiplying

100

A positive number multiplied by a negative number will be...?

Negative

200

-6 x 3 = ?

-18

300

-15 x 12 = ?

-180

400

Marissa buys 4 books at $13 per book. What integer represents the total change in the amount of money Marisa has?

-$52

500

-2/3 x -4 = ?

8/3 or 2 2/3

Dividing

100

A negative number divided by a negative number will be...?

Positive

200

-36 / -9 = ?

4

300

60 / -5 = ?

-12

400

Whitney rolls a ball down a ramp that is 18 feet long. If the ball rolls down 2 feet each second, what integer represents the amount of time, in seconds, the ball takes to reach the end of the ramp?

9 seconds

500

-3.6 / 2 = ?

-1.8