Units and currencies Find an example of how to create a question with units below. See which units and metric prefixes are available. Example 1: Units Let us create a basic question with units: We need to enable the units and prefixes we want to use in Input options > Input syntax. You can check only those units and prefixes you are interested in or use the All tab. The algorithm is very simple: Note that since the corresponding units and prefixes are selected, the units are highlighted in blue. s and l are also highlighted because of units second and liter, but since they are preceded by #, they are interpreted as a variable name. Finally, you can also select the Match unit of measure validation option to force the student answer to be expressed in meters. Units Basic units of the SI Magnitude Name Symbol Length meter m Mass kilogram kg Time second s Electric current amper A Thermodynamic temperature kelvin K Quantity of substance mol mol Luminous intensity candela cd Units derived from SI Magnitude Name Symbol Plane angle radian rad Solid angle steradian sr Frequency hertz Hz Force newton N Pressure, strain pascal Pa Pressure, strain atmosphere atm Energy, work, quantity of heat joule J Energy electronvolt eV Power, radiant flux watt W Electric potential difference, electromotive force volt V Capacitance farad F Electrical resistance ohm Electrical charge coulomb C Electrical conductivity siemens S Magnetic flux weber Wb Magnetic flux density tesla T Inductance henry H Luminous flux lumen lm Illuminance lux lx Radioactivity becquerel Bq Absorbed dose gray Gy Equivalent dose sievert Sv Catalytic activity katal Kat Molar concentration molar M Unit of mass dalton u Units from other systems Magnitude Name Symbol Time hour h Time minute min Volume liter l Pressure, strain bar b Force kilopond kp Length yard yd Length foot ft Length inch in Length mile mi Length nautical mile nmi Volume gallon gal Mass ounce oz Mass pound lb Volume fluid ounce floz Volume pint pt Metric prefixes Text Symbol Factor Power exa E peta P tera T giga G mega M kilo k hecto h deca da deci d centi c mili m micro nano n pico p femto f atto a Example 2: Currencies Let us create a basic question with currencies: As you have seen in the example involving units, you need to enable the currencies in Input options > Input syntax. Notice all currencies can be selected with only one box. The algorithm is very simple. Notice that if you want to make an algorithm for a question with currencies, you must use the corresponding CalcMe symbol for them under Units of measure tab. To conclude, currencies are similar to physical units and we have to take into account: You can do basic arithmetic with currencies ... except you can not convert() between them. Students can write the currency symbol at left ($12) or at right (34€). Both styles will be graded as correct. Students must type the currency symbol using their keyboard. The toolbar for the answer doesn't have any currency symbols. So please ensure that students have the symbol on their keyboard! Alternatively, provide it in the question wording for them to copy & paste. Currencies See below a list of the currently accepted currencies: Symbol Name BTC Bitcoin $ Dollar € Euro Fr Franc kr Koruna/Krona/Krone £ Pound ₽ Ruble ₹ Rupee ₩ Won ¥ Yen/Yuan Table of Contents Example 1: Units Units Metric prefixes Example 2: Currencies Currencies