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Math OER
 Random Problems 

Truth is ever to be found in the simplicity, and not in the multiplicity and confusion of things.

- Isaac Newton

random problems

This page has random problems for each math topic. Each time you reload the page the numbers change.

These problems also have an answer key. Get as much practice as you need.

These are the problems that will appear on our tests!

Build the habit of asking yourself if each answer you get is reasonable. Check your answers so you do not practice bad habits.


Decimal Accuracy



Thinking About Division

Divisibility and Factors

Desired Denominators

Fractions and Decimals

Ratios and Rates


Decimal Point Scoots

Four Replacements for %

Percents, Decimals, and Fractions


Units and Their History

One Step Conversions

More about SI Prefixes

Exponents and Square Roots



Fraction × and ÷

Fraction + and −

Mixed Number Subtraction

Order and Terms


Percent Of

Percent Change

The One Plus Trick

Simple Interest


Unit Analysis

Polygon Perimeter and Area

Circle Circumference and Area



One Step Equations

Proportions and Cross Multiplying

Proportions with Variables

Proportion Word Problems

Scale Factors


Percent Sentences

Percent Word Problems



Area Puzzles

Variables and Negatives









(no random problems)