# Basic Math Practice

- Posted by Brian Stocker MA
- Date March 27, 2013
- Comments 12 comments

### Math Practice

**Basic Math Practice** practice questions – Percent, Fractions Decimals Exponents, and Simple Algebra.

### FREE Basic Math Interactive Quiz

Includes fractions, word problems, decimals, percent, exponents word problems and more!

Test your math skills! Also includes tutorials! Get Started

### Practice Questions

**1. 8 is what percent of 40?**

A. 10%

B. 15%

C. 20%

D. 25%

**2. 9 is what percent of 36?**

A. 10%

B. 15%

C. 20%

D. 25%

**3. Three tenths of 90 equals:**

A. 18

B. 45

C. 27

D. 36

**4. .4% of 36 equals:**

A. 1.44

B. .144

C. 14.4

D. 144

**5. The ratio of 8:5 = (?)%**

A. 75%

B. 150%

C. 175%

D. 160%

**6. ^{3}/_{5} = (?)% x ?**

A. 75%

B. 100%

C. 78%

D. 60%

**7. Express ^{2}/_{5} as a decimal.**

A. .33

B. .3

C. .4

D. .5

**8. Express .56 as a percentage.**

A. 56%

B. .56%

C. 5.6%

D. .056%

**9. Express ^{18}/_{6} as a percentage.**

A. 300%

B. 30%

C. 150%

D. 3%

**10. Express ^{4}/_{20} as a percentage.**

A. 25%

B. 20%

C. 15%

D. 40%

### Answer Key

**1. **C. Finding the percentage of one number and another.

**2.** D. Finding the percentage of one number and another.

**3.** C. Determining percent from a whole number.

**4.** B. Determining the fractional percentage of a number.

**5.** D. Determining the percentage of a ratio statement.

**6.** D. Percentage of a fraction and another fraction.

**7.** C. Converting common fraction to a decimal fraction.

**8.** A. Converting decimal fraction to a percentage.

**9.** A. Converting fraction to percent.

**10.** B. Converting fraction to percent.

### Decimal Tips Tricks and Shortcuts

### Converting Fractions to Decimals

### Basic Math Video Tutorial

### Most Common Basic Math Mistakes

- , such as misreading a problem, simple arithmetic mistakes, or other careless errors
- Not showing all of the steps. This makes it difficult for the teacher to understand how you got the answer.
- Not checking your work or not reviewing their test before turning it in. Never leave the test room early!
- Not understanding the problem and solving it with an inappropriate method.
- Not understanding of basic math concepts and operations, such as fractions, decimals, and basic algebra.
- Not paying attention to the units of measure.
- Not understanding basic terminology, such as “factor,” “product,” and “quotient.”
- Not paying attention to the sign of the answer or confusing the sign.
- Not using the correct formula or equation for the problem.

**Written by**, Brian Stocker MA., Complete Test Preparation Inc.

**Date Published:**Wednesday, March 27th, 2013

**Date Modified:**Wednesday, May 3rd, 2023

## 12 Comments

Hey how would you do .4% of 36 equals without a calculator

.4/100 = X/36

so .4 X 36 = 14.4 then divide by 100 which moves the decimal place 2 places to the left 0.144

So without a calculator, the only part you have to worry about is (.4 X 36) which you can do on scrap paper.

Or you could say that 1/10 of 36 = 3.6, therefore 4/10 of 36 = 14.4, as a Percentage is 100th, divide 14.4 by 100 = .144 (Move the decimal point two to the left)

Should be able to do all that in your head.

i have no idea but i estimated that the answer might be A because 1.44 is the most likely answer

How do you calculate:

3/5 = (?)% x

Thx

Hi – 3/5 = x/100; cross multiply, so, 300 = 5x; divide both sides by 5, so, 60 = x

so 3/5 is 60%.

There is a shorter way since 100 is divisible by 5

3/5 = x/100 – multiply both sides by 5, so 3/1 = 5x/100 = 3 = x/20; multiply both sides by 20, so

60 = x.

Or you can just do that in your head!

You guys are all stupid, I did these questions in five seconds and you are asking what three fifths equal in percentage?

That is so rude of you. we are all leaners here . not that we don’t know it, but want to know more. people still learn no matter how smart they are. please stop.

Thats so true ;). Whatever, its just people these days.

Wow!! I can’t believe you would dare to say such a thing. I usually don’t comment on things like this, but I had to speak up here.

No one is stupid, nor is there a such thing as a stupid question. If you don’t know you ask so you can grow. Those that fail to ask plan to fail. You can’t call people stupid, because they may be at another level than you are. If you were asking such a question, I’m sure you wouldn’t want anyone to judge you and call you out of your name (in which no one can probably pronounce.).

u dont need math for that 3/5 is 60 since 2 times 5 is 10 which is 100% and 3 times 2 is 6 where as the problem is 60percent

how will I do ratio