8th grade midterm review (part 2)

Exponents

100

x³(x⁶)

x⁹

200

(y²)⁵

y¹⁰

300

3⁵/3⁴

3¹ or 3

400

7⁰

1

500

3^-3

1/3³ or 1/27

Scientific Notation

100

1.62 x 10⁴ in standard form

16,200

200

4.86 x 10^-3 in standard form

.00486

300

2,300,000 in scientific notation

2.3 x 10⁶

400

.000789 in scientific notation

7.89 x 10^-4

500

A patient has 0.0000075 grams of iron in 1 liter of blood. The normal level is between 6 x 10^-7 and 

1 x 10^-5 grams. Is the pateitns iron level normal? Explain. 

Yes, the patient has 7.5 x 10^-6 grams, which falls within the range. 

Computing Scientific Notation

100

9.9 x 10⁵/3.3 x 10²

3 x 10³

200

(3.4 x 10⁴)(6.7 x 10²)

2.278 x 10⁷ 

300

9.6 x 10⁴ - 3.7 x 10³

9.23 x 10⁴

400

2.3 x 10³ + 4.6 x 10²

2.76 x 10³

500

Fill in the blank:

3.45 x 10^-7 = .000345 x 10^____

-3

Square roots and rational numbers

100

Find the square(s) of 64

8 and -8

200

What is the square root of 222, approximated to the hundredths place

14.89 or 14.90

300

What is a rational number?

A number that can be written as the ratio a/b, where b is not zero.

400

Give an example of a irrational number

any imperfect square or never ending, non repeating decimal

500

Classify the number -3 with as many classifications as possible. 

Real, Rational, Integer 

Solving Equations

100

Solve for x. 

3x + 10 = 8x - 5

x = 3

200

Solve for q.

1/5q = 9 - 2/5q

q = 15

300

Solve for q.

20 + 8(q-11) = -12

q = 7

400

Solve for x.

1/2(12x + 4) = 6x + 4 + (-2)

Infinite solutions

500

Solve for x.

6(5 - 2x) = -4(3x + 1)

NO SOLUTION