Work through percentages, fractions, ratios, discounts, tips, GPA and common scientific operations with focused calculators.
Calculate percentages, percentage change and percentage of a value.
Add, subtract, multiply or divide fractions.
Simplify a ratio to its lowest whole-number form.
Perform common scientific calculations.
Calculate sale price and amount saved.
Calculate a tip and split the total bill.
Calculate a weighted GPA from grades and credits.
The Math section covers common calculations that are easy to mistype or misinterpret when done quickly. Percentage-of and percentage-change questions are separated because they answer different things. Fraction and ratio tools reduce values using whole-number relationships, while the scientific calculator handles selected functions such as roots, logs and trigonometry.
CalcNator shows formulas or methods on the individual pages so you can check the arithmetic rather than treating the result as a black box.