# arithmetic(6) [netbsd man page]

ARITHMETIC(6) BSD Games Manual ARITHMETIC(6)NAME

arithmeticquiz on simple arithmetic--SYNOPSIS

arithmetic [+-x/] [-orange]-rDESCRIPTION

arithmetic asks you to solve problems in simple arithmetic. Each question must be answered correctly before going on to the next. After every 20 problems, it prints the score so far and the time taken. You can quit at any time by typing the interrupt or end-of-file character. The options are as follows:By default, arithmetic asks questions on addition of numbers from 0 to 10, and corresponding subtraction. By supplying one or more of the characters +-x/, you can ask for problems in addition, subtraction, multiplication, and division, respectively. If you give one of these characters more than once, that kind of problem will be asked correspondingly more often.-oIf a range is supplied, arithmetic selects the numbers in its problems in the following way. For addition and multiplication, the numbers to be added or multiplied are between 0 and range, inclusive. For subtraction and division, both the required result and the number to divide by or subtract will be between 0 and range. (Of course, arithmetic will not ask you to divide by 0.) The default range is 10. When you get a problem wrong, arithmetic will remember the numbers involved, and will tend to select those numbers more often than others, in problems of the same sort. Eventually it will forgive and forget. arithmetic cannot be persuaded to tell you the right answer. You must work it out for yourself.-rDIAGNOSTICS

``What?'' if you get a question wrong. ``Right!'' if you get it right. ``Please type a number.'' if arithmetic doesn't understand what you typed.SEE ALSO

bc(1), dc(1)BSD

May 31, 1993 BSD

## Check Out this Related Man Page

pnmarith(1) General Commands Manual pnmarith(1)NAME

pnmarith - perform arithmetic on two portable anymapsSYNOPSIS

pnmarith -add|-subtract|-multiply|-difference|-minimum|-maximum. pnmfile1 pnmfile2DESCRIPTION

Reads two portable anymaps as input. Performs the specified arithmetic operation, and produces a portable anymap as output. The two input anymaps must be the same width and height. The arithmetic is performed between corresponding pixels in the two anymaps, as if maxval was 1.0, black was 0.0, and a linear scale in between. Results that fall outside of [0..1) are truncated. The operatorcalculates the absolute value of pnmarith-differencepnmfile1 pnmfile2, i.e. no truncation is done. All flags can be abbreviated to their shortest unique prefix.-subtractSEE ALSO

pbmmask(1), pnmpaste(1), pnminvert(1), pnm(5)AUTHOR

Copyright (C) 1989, 1991 by Jef Poskanzer. Lightly modified by Marcel Wijkstra <wijkstra@fwi.uva.nl> 26 August 1993 pnmarith(1)