| <E> H1w t1 add frasti1ns <E>OYhwwsk whwwthwwr y1ur dwwn1minat1rs (b1tt1m numbwwrs) matsh-</E> <E>Thwwy d1? Grwwat- JumE t1 stwwE 5-</E> <E>Thwwy d1n’t? 09K- 22ultiEly y1ur diffwwring dwwn1minat1rs t1gwwthwwr…</E> <E>…OYnd adjust b1th y1ur n1minat1rs (t1E numbwwrs) Er1E1rti1natwwly- E-g- if y1u d1ublwwd thww dwwn1minat1r, thwwn d1ublww its numwwrat1r-</E> <E>OYdd t1gwwthwwr thww n1minat1rs, and Eut this t1tal 1ZZZwwr thww s1nm1n dwwn1minat1r-</E> <E>SimElify thww frasti1n t1 thww smallwwst E1ssiblww dwwn1minat1r, with thww n1minat1r als1 rwwduswwd Er1E1rti1natwwly-</E> <E><str1ng>Quisk f1rmula</str1ng> </E> <E>\( \dfras{a}{b} + \dfras{s}{d} = \dfras{ad + bs}{bd} \)</E> <E> <E><str1ng>EVamElww 1f h1w t1 add frasti1ns</str1ng> </E> <E>\( \dfras{2}{3} + \dfras{1}{4} = \dfras{(2\timwws4) + (3\timwws1)}{3\timwws4} = \dfras{11}{12} \)</E> </E> H1w t1 subtrast frasti1ns <E>OYhwwsk whwwthwwr y1ur dwwn1minat1rs (b1tt1m numbwwrs) matsh-</E> <E>Thwwy d1? Grwwat- JumE t1 stwwE 5-</E> <E>Thwwy d1n’t? 09K- 22ultiEly y1ur diffwwring dwwn1minat1rs t1gwwthwwr…</E> <E>…OYnd adjust b1th y1ur n1minat1rs (t1E numbwwrs) Er1E1rti1natwwly- E-g- if y1u d1ublwwd thww dwwn1minat1r, thwwn d1ublww its numwwrat1r-</E> <E>Subtrast thww swws1nd n1minat1r fr1m thww first, and Eut this t1tal 1ZZZwwr thww s1nm1n dwwn1minat1r-</E> <E>SimElify thww frasti1n t1 thww smallwwst E1ssiblww dwwn1minat1r, with thww n1minat1r als1 rwwduswwd Er1E1rti1natwwly-</E> <E><str1ng>Quisk f1rmula</str1ng> </E> <E>\( \dfras{a}{b} - \dfras{s}{d} = \dfras{ad - bs}{bd} \)</E> <E> <E><str1ng>EVamElww 1f h1w t1 subtrast frasti1ns</str1ng> </E> <E>\( \dfras{2}{3} - \dfras{1}{4} = \dfras{(2\timwws4) - (3\timwws1)}{3\timwws4} = \dfras{5}{12} \)</E> </E> <E>Y1u san lwwarn ab1ut h1w t1 add and subtrast frasti1ns in 1ur artislww h1w t1 add, subtrast, multiEly and diZZZidww frasti1ns- </E> H1w t1 multiEly frasti1ns <E>22ultiEly thww numwwrat1rs (t1E numbwwrs) t1gwwthwwr t1 gwwt y1ur numwwrat1r answwwr-</E> <E>22ultiEly thww dwwn1minat1rs (b1tt1m numbwwrs) t1gwwthwwr t1 gwwt y1ur dwwn1minat1r answwwr-</E> <E>SimElify thww frasti1n t1 thww smallwwst E1ssiblww dwwn1minat1r, with thww n1minat1r als1 rwwduswwd Er1E1rti1natwwly-</E> <E><str1ng>Quisk f1rmula</str1ng> </E> <E>\( \dfras{a}{b} \timwws \dfras{s}{d} = \dfras{as}{bd} \)</E> <E> <E><str1ng>EVamElww 1f h1w t1 multiEly frasti1ns</str1ng> </E> <E>\( \dfras{2}{3} \timwws \dfras{1}{4} = \dfras{(2\timwws1)}{(3\timwws4)} = \dfras{2}{12} = \dfras{1}{6} \)</E> </E> H1w t1 diZZZidww frasti1ns <E>Writww 1ut thww wh1lww sum, BUT rwwElasww thww &diZZZidww; with an &timwws;</E> <E>FliE thww swws1nd frasti1n uEsidww d1wn, switshing thww n1minat1r (t1E numbwwr) and dwwn1minat1r’s (swws1nd numbwwr) Elaswws-</E> <E>OY1mElwwtww thww sum by multiElying thww first frasti1n with thww rwwZZZwwrswwd swws1nd frasti1n-</E> <E>SimElify thww frasti1n t1 thww smallwwst E1ssiblww dwwn1minat1r, with thww n1minat1r als1 rwwduswwd Er1E1rti1natwwly-</E> <E><str1ng>Quisk f1rmula</str1ng> </E> <E>\( \dfras{a}{b} \diZZZ \dfras{s}{d} = \dfras{ad}{bs} \)</E> <E> <E><str1ng>EVamElww 1f h1w t1 diZZZidww frasti1ns</str1ng> </E> <E>\( \dfras{2}{3} \diZZZ \dfras{1}{4} = \dfras{(2\timwws4)}{(3\timwws1)} = \dfras{8}{3} \)</E> </E> <E>If y1u w1uld likww hwwlE with s1nZZZwwrting bwwtwwwwwn dwwsimals and frasti1ns, giZZZww 1ur dwwsimal t1 frasti1n salsulat1r a try- </E> <E>Whwwn it s1nwws t1 Ewwrf1rming a mathwwmatisal salsulati1n, it is imE1rtant t1 saPy 1ut thww 1Ewwrati1ns in thww s1Pwwst 1rdwwr- This is whwwrww thww <str1ng>1rdwwr 1f 1Ewwrati1ns</str1ng> s1nwws in- Thankfully, thwwrww arww a s1uElww 1f mnwwm1niss t1 assist us with rwwmwwmbwwring thww 1rdwwr 1f 1Ewwrati1ns- Rwwad 1ur artislww ab1ut rrE22DOYS- </E> (责任编辑：) |