Midterm Exam Practice

Scientific/ Standard Notation

100

If you move your decimal to the left then the exponent will be positive or negative?

Negative

200

If you move your decimal to the right then the exponent will be positive or negative?

Positive

300

0.0000519 expressed in scientific notation

5.19 X 10^-5

400

Write 13,800,000,000 in scientific notation.

1.38 X 10¹⁰

500

What is 2.03×10¹¹ written in standard notation?

203, 000, 000, 000

Equations

100

2(b + 12) = 16

b = -4

200

6x - 3 = 3x + 12

x = 5

300

2(k-5) + 3k = k + 6

k = 4

400

2(2m) + 4(4m+2) = 108

m = 5

500

 What is the solution of the equation −14+2x+3=4x−13−7x?

x = -2/5

Exponents/ solving

100

Identify the base and the exponent in the following expression. 

4⁵ 

4 is the Base and 5 is the Exponent

200

Solve: x² = 144

x = Positive or negative 12

300

Find the correct exponent to write 7,800,000,000 in scientific notation.

7.8 X 10^?

9

400

What is the cube root of 4913?

17

500

Re-write the following using exponents: 

2*2*2*2*y*y*y*y*y*y*x*x*x

2⁴y⁶x³

Estimating/ Equivalent

100

Which fraction is equivalent to 1.5?

A) 15/10

B) 15/100

C) 100/15

D) 10/15

A) 15/10

200

Larry has written 6/10 of his book report. Which decimal represents the part of the book report he has written?

0.6

300

Determine the two integers that have the square root of 158 between them.  

12 and 13

400

Which number is closest to the square root of 66 ?

8.1

500

Which two whole numbers is the square root of 20 between?

4 and 5

Real Numbers

100

1.101001000 is rational or irrational?

Irrational

200

7.478478 is rational or irrational?

Rational

300

Irrational means

It does not repeat nor terminate and goes on forever.

400

Rational means

It repeats or terminates and can be a ratio or fraction.

500

An irrational number can also be rational.

True or False

False