Pre-Algebra Review

scientific notation

100

Convert to standard notation. 

4.5 x 10² =

450. 

200

Convert to standard notation.

1.73 x 10⁷ =

17300000.

300

Convert to standard notation.

8.43 x 10^-4 =

0.000843

400

Convert to standard notation.

6.7 x 10^-5 =

0.000067

500

Convert to standard notation.

7.48 x 10^-7 =

0.000000748

fraction

100

2/4 _ 4/8 =

=, <, or >

=

200

percent changes into fraction

83% = 

83/100

300

1/20 _ 1/60 =

=, <, or >

>

400

reduce 20/100 =

1/5

500

reduce 200/1,400 =

1/7

angles

100

A quadrilateral interior angle sum is 360 degree. How many sides does the shape have? 

4

200

octagon have 8 sides, how many triangles in total?

6

300

sides            triangles           find the degree for each

3                    1                            ?

4                    2                            ?

5                    3                            ?

6                    4                            ?

angles measures 

180 degree

360 degree

540 degree

720 degree

400

Pentagon times 180 degree=

900 degree

500

 Equilateral triangle=180 degree

each angles=        degree

60 degree

percent

100

decimal changes into what percent

.69=

69%

200

percent changes into what decimal

20% =

.20

300

fraction changes into what percent

300/1000 =

30%

400

30% changes into what fraction(reduce)=

3/10

500

percent changes into decimal and into fraction

140%=_._ _= /

1.40

140/1000

real life problems

100

pizza have 8 slices, there are four people, how many slices would each person have?

2

200

factors of 15

1,3,5,15

300

6/12=0._=   %

0.5

50%

400

If you have a triangle and a square together, what is the sum of the interior angles?

180+360=540 degree

500

light travel= 9460000000. km

Write it in scientific notation 

9.46 times 10⁹