books
basic math set
each title covers early techniques used to master the number operations especially addition and subtraction including spreads on doubling and sharing as precursors to multiplication and division . the first page dealing with each technique provides a simple explanation of that calculation method . this is followed by exercises using that technique starting with very simple equations .
paperback heinemann library 2009 isbn13 9781403481641 isbn10 1403481644
abridged n isbn 13 9781403481641 number in series 1 publisher heinemann library release date 62135769600000