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СW(xu)4(li)}

r(sh)g2024-09-30 20:18:29 С ҪͶ
  • P(gun)]

2016СW(xu)4(li)}

СW(xu)W(xu)׌Sຢ^۵ĿĿ؄eǑ}ôСW(xu)AεĔW(xu)ԓ?YJBYSСP(gun)СW(xu)4(li)}gӭϣ҂俼!˽P(gun)ϢՈmP(gun)ע҂îI(y)ӖW(wng)!

2016СW(xu)4(li)}

һÓQ(wn)}

}ж(g)δ֪һ(g)δ֪r(sh)һ(g)δ֪Ȼ֪lM(jn)мOԵ\Yclټm{ĶY

һ(g)](i)I(mi)10ֺ20ֵ]Ʊ100ֵ18Ԫ8@(g)](i)I(mi)@ɷN]Ʊُ?

ȼٶI(mi)(li)100]Ʊȫ20һôֵ20×100=2000()ԭ(li)Ŀֵ2000-1880=120()@(g) 120ǰ10һĿ20һÿ20-10=10()˿10һжُ

ʽ(2000-1880)÷(20-10) =120÷10 =12()→10һď

100-12=88()→20һď20һď10һďͬע⿂ֵԭ(li)Ŀֵ

ӯ̝(wn)}(ӯ㆖(wn)})

}ĿЃɷN䷽ÿN䷽ĽY(hu )F(ӯ)(̝)rͨ@(li)(wn)}ӯ̝(wn)}(Ҳӯ㆖(wn)})

@(li)(wn)}r(sh)ԓȌɷN䷽M(jn)б^ÿݔ׃׃ӷĿݔȻ}ƷĔ

Ӌ㷽ǣ

һһβr(sh) ÿݔ=(+㔵)÷ɴÿݔIJ

ɴζr(sh) ݔ=(^-^С)÷ɴÿݔIJ

ɴζr(sh) ݔ=(^㔵-^С㔵)÷ɴÿݔIJ

W(xu)УһЩɫUPֽog(sh)MͬW(xu)ÿ˷ֽo֧tʣ45֧ÿ˷ֽo7֧tʣ3֧g(sh)MжͬW(xu)?ɫUPЎ֧?

(45—3)÷(7-5)=21() 21×5+45=150(֧)

g(wn)}

g(wn)}Ҫc(din)ǃ˵g׃sl(f)׃

õӋ㹫ʽǣ

ɱr(sh)Сg=Сg֮÷(-1)

ǰg=СĬF-ɱr(sh)Сg

g=ɱr(sh)Сg-СĬFg

H54qӽ12qHgǃg4?

(54-12)÷(4-1) =42÷3 =14(q)→ӎg

14-12=2()→2

2Hgǃӵ4

ţԲ݆(wn)}(©ˮ(wn)})

^ţһƬ޷ȵIJݵϳԲţһ߅Բݵһ߅L(chng)(p)ţĔr(sh)@ƬݵϵIJݽ(jng)^(gu)ٕr(sh)g̈́ó?

һƬݵɹ15^ţ1025^ţɳ5ÿL(chng)ٶһô@Ƭݵ10^ţԳԎ?

һ1^ţÿijԲÿݔô15^ţ10овݵԭеIJ@Ƭݵ10L(chng)(li)……п԰l(f)F25^ţ5ijԲ15^ţ10ijԲҪ

ԭһõĕr(sh)g;L(chng)(li)IJҲ@(g)@Ƭݵ5L(chng)(li)IJÿL(chng)(li)IJݿɹ5^ţһ

ˮ10ţԕr(sh)ó5^ţ(zhun)T(mn)ÿL(chng)(li)IJµţԲݵԭеIJ

(15×10-25×5)÷(10-5)=(150-125)÷(10-5) =25÷5 =5(^)

→ɹ5^ţһ

150-10×5 =150-50 =100(^)→ݵԭеIJݿɹ100^ţһ

100÷(10-5) =100÷5 =20()

10^ţԳ20

СW(xu)4(li)}P(gun)£

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