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С(sh)W(xu)4(yng)}

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

2016С(sh)W(xu)4(yng)}

СW(xu)(sh)W(xu)׌Sຢ^۵ĿĿ؄eǑ(yng)}ôСW(xu)AεĔ(sh)W(xu)ԓ?YJBYSСP(gun)С(sh)W(xu)4(yng)}gӭ(x)ϣ(du)҂俼!˽P(gun)ϢՈ(qng)m(x)P(gun)ע҂(yng)îI(y)Ӗ(xn)W(wng)!

2016С(sh)W(xu)4(yng)}

һÓQ}

}ж(g)δ֪(sh)һ(g)δ֪(sh)r(sh)(dng)һ(g)δ֪(sh)Ȼ(j)֪lM(jn)мO(sh)Ե\(yn)㡣Y(ji)clټm(dng)?sh){(dio)ĶY(ji)

һ(g)]ۺI10ֺ20ֵ]Ʊ100ֵ18Ԫ8ǡ@(g)]ۺI@ɷN]Ʊُ?

ȼٶI100]Ʊȫ20һôֵ(yng)20×100=2000()ԭĿֵ2000-1880=120()@(g) 120֣ǰ10һĿ20һÿ20-10=10()˿10һжُ

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

100-12=88()→20һď(sh)20һď(sh)10һď(sh)ͬϣע⿂ֵԭĿֵ

ӯ̝}(ӯ㆖})

}ĿЃɷN䷽ÿN䷽ĽY(ji)(hu)F(xin)(ӯ)(̝)rͨ@}ӯ̝}(Ҳӯ㆖})

@}r(sh)(yng)ԓȌɷN䷽M(jn)б^ÿݔ(sh)׃(sh)׃ӷĿݔ(sh)Ȼ(j)}ƷĔ(sh)

Ӌ(j)㷽ǣ

(dng)һ(sh)һβr(sh) ÿݔ(sh)=((sh)+㔵(sh))÷ɴÿݔ(sh)IJ

(dng)ɴζ(sh)r(sh) ݔ(sh)=(^(sh)-^С(sh))÷ɴÿݔ(sh)IJ

(dng)ɴζr(sh) ݔ(sh)=(^㔵(sh)-^С㔵(sh))÷ɴÿݔ(sh)IJ

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

(45—3)÷(7-5)=21() 21×5+45=150(֧)

g}

g}Ҫc(din)ǃ˵g׃(sh)sl(f)׃

õӋ(j)㹫ʽǣ

ɱr(sh)Сg=Сg֮÷((sh)-1)

ǰg=СĬF(xin)-ɱ(sh)r(sh)Сg

g=ɱr(sh)Сg-СĬF(xin)g

H54qӽ12qHgǃg4?

(54-12)÷(4-1) =42÷3 =14(q)→ӎg

14-12=2()→2

2Hgǃӵ4

ţԲ݆}(©ˮ})

^ţһƬ޷(ni)IJݵϳԲݡţһ߅Բݵһ߅Lݡ(dng)(p)ţĔ(sh)r(sh)@ƬݵϵIJݽ(jng)^ٕr(sh)g̈́ó?

һƬݵأɹ15^ţ1025^ţԣɳ5졣ÿLٶһô@Ƭݵ10^ţԣԳԎ?

һ1^ţÿijԲÿݔ(sh)ô15^ţ10죬овݵԭеIJ@Ƭݵ10L……п԰l(f)F(xin)25^ţ5ijԲ15^ţ10ijԲҪ

ԭ?yn)һõĕr(sh)g;(du)(yng)LIJҲ@(g)@Ƭݵ5LIJݡÿLIJݿɹ5^ţһ

ˮ(dng)10ţԕr(sh)ó5^ţTÿLIJµţԲݵԭеIJݡ

(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

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