efourth或threea
do
equarter12ahalf14o
equarter或aquarter112o
ea
dahalf114o
ea
daquarter
2当分数后面接名词时，如果分数表示的值大于1，名词用复数；小于1，名词用单数。112hours一个半小时（读作o
ea
dahalfhours）234meters二又四分之三米（读作twoa
dthreefourthsmeters）45meter五分之四米56i
ch六分之五英寸
真分数properfractio
假分数improperfractio
带分数mixed
umberwholepart整数部分；fractio
part分数部分simplifythismixed
umber化简带分数普通分数vulgarfractio
，commo
fractio
简分数simplefractio
繁分数complexfractio
四分之一quarter
610
f中国双语教育网资料
资料搜集：中国双语教育网信息中心
公分母commo
de
omi
ator公约数commo
divisor倍数multiple公倍数commo
multiple质因子primefactor公因子commo
factorleastcommo
multipleLCM最小公倍数theexpressio
withfewestfactors
divisiblebyeach
umberleastcommo
de
omi
atorLCD最小公分母theLCDofthede
omi
ators
Fi
dtheleastcommo
de
omi
atorforthesefractio
s1234Because2isafactorof4dividesi
toitwithoutaremai
der能被其整除the
leastcommo
de
omi
atoris4Reciprocal倒数：Whe
theproductoftwofractio
sis1the
thefractio
are
reciprocals
Tofi
dthereciprocalexcha
gethe
umeratorforthede
omi
ator
Fi
dthereciprocalof4
Thereciprocalofawhole
umberis1overthat
umberFi
dthereciprocalof0001reciprocalis10
otdefi
ed无意义Thereciprocalof0is
otdefi
edbecause
o0’sareallowedi
afractio
’s
de
omi
ator
Foreveryreal
o
zero
umber“a”aa
d1aarereciprocalsRuleforadditio
offractio
swiththesamede
omi
ator分母相同的分数加法法则：Whe
addi
gtwofractio
swiththesamede
omi
atoraddthe
umbers
a
dputtheresultoverthede
omi
atorWhatistheruleforsubtractio
oflikefractio
s两分母相同的分数减法法则
Whe
subtracti
gfractio
swiththesamede
omi
atorsubtractthe
umerators
a
dputtheresultoverthede
omi
ator
如何运算分母相同分式的加、减法？Whatistheprocedureforaddi
gorsubtracti
gfractio
sthathavethesamede
omi
ator1The
umeratoroftheresultisthesumordiffere
ceofthe
umeratorsofthegive
fractio
s2Thede
omi
atoristhecommo
de
omi
atorofthegive
fractio
s3Reducetheresulttothelowestterms
如何运算分母不同的分式的加、减法？Whatistheprocedureforaddi
gorsubtracti
gfractio
sthathavediffere
tde
omi
ators1Factoreachde
omi
atortofi
dthelowestcommo
de
omi
atorLCD2Makeeachfractio
a
equivale
tsoallfractio
shavethesameLCD3Performtheadditio
orsubtractio
4Reducetolowestterms
异分母分数加法法则：1fi
dtheLCDforbothfractio
s2co
verttolir