Gee-Bar-Hun
幾霸昏
Type the answer. Know it for real.
Math
⚡
SpeedMath
Race through arithmetic. Addition, subtraction, multiplication, and more.
🛒
The Total Is
Watch prices flash by. Estimate the total.
📐
UnitMath
Convert between units of length, weight, volume, and temperature.
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Percentage Pro
Calculate percentages, discounts, and markups in your head.
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Fraction Blitz
Master fractions: convert, add, subtract, multiply, and divide.
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Order of Operations
Master PEMDAS with expressions that punish left-to-right guessing.