举一反三：五年级数学上学期应用题之列方程解应用题.pdfVIP

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举一反三：五年级数学上学期应用题之列

方程解应用题

StepXXX:nProblems

Example1:Abottleofoilanditscontainerweigh3.4

kilograms。Afterusinghalfofit。thecontainerandremainingoil

weigh1.9kilograms。Howmanykilogramsofoilwereinthe

bottleoriginally。Whatistheweightofthecontainer?

n:LetXbetheoriginalamountofoilinkilograms。Then。

wehave:

X+1.9=3.4

SolvingforX。wegetX=3kilograms。Therefore。the

weightofthecontaineris1.9-3/2=0.4kilograms.

Answer:Theoriginalamountofoilwas3kilogramsandthe

weightofthecontaineris0.4kilograms.

举一反三：五年级数学上学期应用题之列方程解应用题--第1页

举一反三：五年级数学上学期应用题之列方程解应用题--第2页

1.Afertilizerfactoryplanstoproduce7200tonsoffertilizer。

Afterproducing1200tonspermonthfor4months。theywill

produce800tonspermonth。Howmanymoremonthswillittake

tocompletethen?

2.Twopeoplewalkthesamedistance。PersonAwalks4.5

kilometersperhourandpersonBwalks3kilometersperhour。

PersonAfinishesthedistance2.5hoursearlierthanpersonB。

Howlongisthedistanceinkilometers?

3.XXXintoapool。Thepartofthepoleinthemudis0.6

metersandthepartabovethewateris0.7meters。Thedepthof

thepoolis2.2meters。Whatisthelengthofthebamboopole?

XXX2:XXX6(2)collects60cans。Thereare4groupsin

class6(2)。Whatistheaveragenumberofcanscollectedbyeach

group?

举一反三：五年级数学上学期应用题之列方程解应用题--第2页

举一反三：五年级数学上学期应用题之列方程解应用题--第3页

n:LetXbetheaveragenumberofcanscollectedbyeach

group。Then。wehave:

4X=60

SolvingforX。wegetX=15.

Answer:Eachgroupcollec