# Fractions and variables --- Introduction ---

 Which topic ?: 1 addition and subtraction [ type: 2/a + 3/a ] [H2/H3]2 addition and subtraction [ type: 7/(ab)+2/a ] [H2/H3]3 addition and subtraction [ type: 4/a+2/3 ] [H2/H3]4 addition and subtraction [ type: 3a/b+a/5 ] [H2/H3]5 addition and subtraction [ type: 2ba^2/b+3a/12 ] [H3/H4]6 addition and subtraction [ type: 2/a + 3/(a-1) ] [H3/H4]7 simplify [ type: 2a^2/(4a) ] [H2/H3]8 simplify [ type: 2a^2b^2/4ab ] [H2/H3] 9 simplify [ type: 2a*(a+b)/(4a^2*(a+b))] [H3/H4] 10 multiplication I [H2/H3/H4]11 multiplication II [H4/H5]12 division [H3/H4]13 division [H4/H5]14 addition and subtraction [ type: 4/a+2 ] [H2/H3]15 simplify16 multiplication III [H3/H4]17 addition and subtraction [ type: a/2 + a/3 ] [H2/H3]18 multiplication IV [H3/H4] Set the difficulty level of this exercise: increasing easy normal difficult very difficult accuracy of the answer? not applicable mathematical precise 5 decimals 4 decimals 3 decimals 2 decimals 1 decimal integers Set the usage of this exercise: used for training :) select yourself printerversion of exercise used for testexam used in formal exam all deep html hyperlinks to this module

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• Description: practicing with fractions and variables. This is the main site of WIMS (WWW Interactive Multipurpose Server): interactive exercises, online calculators and plotters, mathematical recreation and games
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