小升初人教版2022-2023学年广东省惠州市数学升学分班考模拟试卷（卷一）含解析

《小升初人教版2022-2023学年广东省惠州市数学升学分班考模拟试卷（卷一）含解析》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

ூ
ᓣ௃ᦟ᱐2022-2023ḕᦪᓣᑖὃᔁᔁஹ⌱⚪1.3ᑖḄᙊᙊ┵522,ᙊ┵m2.A.13.5B.13C.39D.262.3ᑖ#ᵬ%&'()*4,-%./01%Ḅ'2᪵4.5ᩭᵬ%&'-%&'Ḅ7A.182B.483C.583D.2813.33.3ᑖᵬᦪḄ:12,-ᦪ32Ḅᵬᦪ-ᦪḄA.43B.11C.0D.84.3ᑖ=>?ᙊ@ᡠᙠᙊḄCD6ᔖF.GH./I?ᙊ@ḄᕜKᔖF.A.15.42B.9.42C.18.84D.14.1315.3ᑖILᴻNᑁ5ᨵQR.QḄSTRḄ:.Uᐭ15WQX.QḄSTᓰQRZTḄ©,Nᑁ5ᨵQRW.A.480B.360C.300D.4406.3ᑖᵬᦪ-ᦪḄ75%,-ᦪ^ᦪḄ_`.GH.ᵬᦪ^ᦪḄ7.3ᑖabcdᡂfIgh@iᑡ.kᜓmUn᪥pqr7s.ᵫuvwxy.z{|}33~.ᔜ|}᣸.abc5ᩭkᜓ~mU7s.A.1089B.1024C.289D.1968.3ᑖIᙊᙊ┵☢CD7281,7481,ᙊ┵Ḅ12ᔖF.ᙊḄᔖF.A.36B.12C.3D.49.3ᑖᨵஹஹᔜ10z.Ḽ.*ᩭ.}ᨵ2x⁐.GH}◤⌕z.1⚓/Z21⚓

1A.9B.5C.16D.1310.3ᑖᑡgḄIᦪজᙊḄCD?DḄ2`ঝI?ᙊ@ḄᕜKu?DᙊᕜKḄ?_11ঞᵬᦪ7-ᦪᜧ3,-ᦪ7ᵬᦪ¤4টῪ_§@ḄI§45°,/I_§@©ῪC§_§@.ঠ«஺=1X2X3X…X29X30,ᑣ஺Ḅ±²ᨵ8I0.A.1IB.2IC.3ID.4IE.5I´ஹµ¶⚪஺11.4ᑖ᝞¸588Ḅ¹⚗᡽ᜧᑮ5ᩭḄ3`.⌕7½x¾.X⚗¿ÀU.12.3ᑖÁÂᐢᐳ24z.ᦪᦪÅᨵ54ᩩ.ᐸ(Áᨵz.13.4ᑖᙠᡭ☰ÊË(.ÌÍ50ÌÎ.ᨵ2ÌÏᨵÐ(.Ð(᳛Ò.14.4ᑖÓÔḄᡂÕ40ᐗ.*ᔆØ7ᡂÕØ25%,7├ÚØÛ37.5%./ÓÔḄ├ÚØ._1215.4ᑖᵬ-1ᦪÒ70.ᵬᦪḄÜ■u-ᦪḄÞ.ᵬᦪ.16.4ᑖᵬஹ-1ᙢàá1500ᓟF.ã#ᵬᙢᑮ-ᙢäå◤⌕2¤0.#-ᙢæçᵬᙢ◤⌕2.5¤0.ᑣãᩭçḄèᙳêë.17.4ᑖᨵᵬ-1᪷í.ᵬᐜᵨð©.ñᵨð5F.-ᐜᵨð5F.ñᵨðòḄয./01᪷íᒕḄKëà.5ᩭKõ.18.4ᑖᨵᵬ-1_Iöᘤ.ᐜøᵬöᘤùRḄ3᎔ᐭ-öᘤ.ñû-öᘤùRḄü᎔ᐭý^öᘤ.ᨬX^öᘤùRḄ101᎔ᐭᵬöᘤ./0_Iöᘤÿ9ᓣᵬᘤᨵ—ᓣ.19.4ᑖᝤᝤᓤ6᜜᝛"#ᑖḄᜳ&'110°,ᓤ7,-./01ᢣ┐ᜳ&4'110°,56᜜____ᑖ.20.2ᑖ1+3=4=22,1+3+5=9=32,1+3+5+7=16=42,…1+3+5+…+2஻-1@2⚓/C21⚓

2=20132,ᑣ“=.21.4ᑖFa*b=3a-2b,JKLਭ4*1=7,ᑣX=.22.4ᑖᜧஹ1QᦪḄS49.23,TUᦪḄᦪᔣWXY"Z[\]UᜧḄᦪ^_`1QᦪḄa.1122231234523.4ᑖᨵ"bᦪT'~2'e'f'f'7'W'7'I…ᑣ,'@Qᑖᦪ஺24.3ᑖ᝞klm&no5CḄ☢r31.2stᔖv.ᙊḄxyAC=6cm,BD-.DC=21,ᑣ▢{|ᑖ☢r'.25.4ᑖᡭᓺ"|ᵬᓫᡭ⌕12ᡂᓫᡭ⌕15ᡂ.0ᙠᵬஹ1.ᵬ12ᵬ21ᵬ12…᝞ᡭᓺ`|ᐳ.mஹῃ26.⌱〉Ḅtᑡᔜ⚪.(3)1990X1999-1989X2000.£ஹ#kᑡ27.¤t¥(1)5X(1.2x-2)=2.5X(2r-3)(2)9X18-4=1.5X(3)147l5x=9.8.¨ஹ¤©⚪@3⚓/C21⚓

328.4ᑖ᝞klª"Qᙊ«¬®ᑗᡂ°☢±²³\Ḅ°☢ᡧnḄµ¶¬·¸ᡂ"Q¹º»t¬.±¸ᡂḄ»t¬,☢W¼☢Ḅ☢ra207stᔖv½ᩭᙊ«®5ᔖvᑣᩭᙊ«Ḅ¬r¿ÀtᔖvÁ2.29.6ᑖÂ᜜Ã"ÄÅ£QÆ'ÇÈ¥ᣎÊ"ÆᣎËCᦪḄ7,ÌÆᣎË600ᐗmÆ"ÆஹÌÆCaḄ"ΣÆᣎË500ᐗÏ£QÆᐳᣎË¿ᐗÁ30.6ᑖ"Qᙊ┵nÑ᫜᫜ᑁ°☢r9.6stᑖv®5ᑖvªÔ᫜ḄÑᐰ|Ö᎔Ø"Q»t¬ḄÑÙᑁ᎔ØÚÑÙÛÜḼÞ1JKÑÙḄ°☢r4stᑖvÑÙḄÜß|ᑖḄ®¿ᔖvÁ31.ᖪáâᜧãäåYlæᱥÔ198ᐗ〈100ᐗæᱥᑶêæᱥᑶëì50ᐗíìḄ0îïíæðᖪáñḄò¶ᖪó.ôõᝤᝤ⌱Ë1220ᐗḄö÷øùᑮ100ᐗḄæᱥᑶᯠÚüý80ᐗðË"Qþᒹ.
▭ᱥᡭᢚ53_32.ᩭᵬஹᐳᨵ900!ᵬḄ#$%Ḅ#$ᐗ,(᪵Ḅ*+᪵,ᩭᵬஹᔜᨵ,.33.6ᑖ01ᵬᙢ3ᙢ᝞5678ᩭ9:©,*<8⚜>Ḅ?@9A20ᑖBCᑮ᝞ᐜᢥ7GH72ᓟJK!678ᩭ9:L*8⚜>?@9A30ᑖBCᑮᵬஹᙢM,.ᓟJN4⚓/Q21⚓

4RᫀTU⚪W᪆+ஹ⌱Z⚪1.ூᑖ᪆௃^_^:ḄᙊaḄbcdᙊ┵ḄbcḄ3gᑣᙊaTᙊ┵Ḅbcij*d(ᙊ┵ḄbcḄ2gᵫmᓽ

5Ws3.14X64-2+6,=9.42+6,=15.42·ᔖJ0Rs(¬ᙊḄᕜ®d15.42ᔖJ.ᦑ⌱sA.ூ|}௃m⚪ὃ¬ᙊḄᕜ®¹º§.5.ூᑖ᪆௃Ꮇ¼ᩭ½¾ᨵ½xÀᑣ¾ᨵllxÀKᵫ“$ᐭ15À½½ḄÂÃᓰ½_1¾QÃḄ©”<Æs·15+x0s·x+llx+150=1s9,ᑭᵨ8ÈḄÉឋË!ᐸÍᓄᡂºÐᓽ<⌲ÒoW.Ws¼ᩭ½¾ᨵ½xÀᑣ¾ᨵllxÀ·15+x0s·x+llx+150=1s9,12x+15=9X·15+x0,12r+15=135+9x,12r-9x=135-15,3x=120,x=40Õᑣᨵ½¾s40+11X40=480·À0ÕRsÖᑁᨵ½¾480À.ᦑ⌱sA.ூ|}௃WRm⚪ḄᐵdᢕÙ⚪“¾ḄÂÃÚÛ”Ü᪷ᩭ½¾Ý½Ḅᑖ᳛ᓽ<ᑡ8ÈoW.6.ூᑖ᪆௃᪷“ᵬᦪdᦪḄ75%”<ᵬᦪ=75%Xᦪ᪷“ᦪdâᦪḄãä5,<âᦪ=5xᦪÜᵨᵬᦪ◀åâᦪÆW.WsᵬᦪdᦪḄ75%,<ᵬᦪ=75%XᦪᦪdâᦪḄ1

6_1RsᵬᦪdâᦪḄ1êg.ᦑ⌱sD.ூ|}௃ᐜᵨÝᦪḄëìᑖí⊤ïpᵬᦪðâᦪdWqm⚪ḄᐵÜ᪷o+ᦪdñ+ᦪḄᑖiᡈgᵨ◀§¹.7.ூᑖ᪆௃᪷⚪ó+ᐳ3ᣵ33õçèᩭḄº▣Ḅ÷øõᦪd·33+10+2=17õ,mᑭᵨ÷øõᦪX÷øõᦪᓽ92d,ᙊ┵Ḅ<☢=4V_4V3V_12Vᑍ222ᑍd2ᑍA2ᑍd2d,ᵫCᙊ7ḄD9k2,ᙊ┵ḄD9%ᵫCᓽFGH⚪.G345ᙊ7Ḅ8/94%ᙊ┵Ḅ8/9ᓃᙊ7Ḅ<☢=>92d,ᙊ┵Ḅ<☢=>9d,4V=4V3VJ12Vᐔ242ᑍd2ᐔA27Td2ᵫCᙊ7ḄD9Lᙊ┵ḄD9k2,4V12V2s2ᙊ7ḄDᙊ┵ḄDJᑍPᑍd=412=13,2ᡠSᙊ7ḄDᙊ┵ḄDḄF%_1ᙊ7ḄD912X3=4ᔖV%W7⚓/#21⚓

7Zᙊ7ḄD4ᔖV%ᦑ⌱D.ூ௃[⚪ὃ]^_Ḅ`ᵨSbᑭᵨᙊ7dᙊ┵Ḅ8/efGH"▭⚪Ḅᮣi`ᵨ.9.ூᑖ᪆௃k9l⁐ᨵ3o%ᨬpqḄrsᐜrḄ10vwxyol⁐Ḅ%zr^2vl⁐pxḄ%ᡠSv⌕|r1v%}~WJrḄᡂy^ᡠS⌕r10+2+1=13v.G10+2+1=13vZ⌕r13vᦑ⌱D.ூ௃C⚪⚪Ḅᐵᨬ᩽ᑖ᪆%ᑖ᪆⚪Zᫀ.10.ூᑖ᪆௃᪷⚪%ᔜ⌱⚗ᑖ᪆ஹ¢£.GজᙊḄ=>¥>Ḅ2¦%§s┯©%ª«ᙠxᙊᡈ®ᙊ!ঝy5¥ᙊ°Ḅᕜ+®±x®¥>ᙊᕜ+Ḅy¥%§s┯©%¥ᙊḄᕜ+²^yᩩ=>:21ঞᵬᦪ_·ᦪᜧ¹%Ꮇ3·ᦪ3,ᑣᵬᦪ4,ᑣ·ᦪ_ᵬᦪ¼p,§s½¾ট®ῪÁ°Ḅy5Â45°,CÂÅ<Â%ᑣÆy5<ÂÇ45°,ᑣᨬᜧÂ90°,45Á°yÈ®Ὺ=ÂÁ°45°ḄÂÅ⚔Â%ᑣy5<Â}180஺-45°+2=67.5°,ᡠS§s┯©ঠ3a=lX2X3X…X29X30,ᙠ!Ðᨵ5ஹ10ஹ15ஹ20ஹ25ஹ30ᐳ65ᦪ%◀^25Ó5ᦪÔᨵ25kᦪ5᜜%ᐸÖvᨵ15%ᡠSyᐳᨵ6+1=75%ᑣ஺Ḅ×Øᨵ750,ᡠS[⌱⚗§s┯©ᦑ⌱A.ூ௃C⚪ÙbḄÚ²%Ûw_ÚÜᓫ%Þ±ßẠ⚪%v⌕áâ%ã᧕åᡂ%æçèßẠḄ/é.Jஹê&⚪஺11.ூᑖ᪆௃_Ḅឋìᢣ_Ḅª⚗îï⚗xèðᡈ◀SxḄᦪ0◀᜜%_ñpòCᑖ᪆GZ.W8⚓/#21⚓

8G᝞ô58Ḅª⚗᡽ᜧᑮ÷ᩭḄ3¦%⌕ù_ñpòï⚗Ç`ú᡽ᜧᑮ÷ᩭḄ3¦%ᵫ8òᡂ24,û±ï⚗üý24-8=16.ᦑ16.ூ௃C⚪þ⌕ᑭᵨ_ḄឋìGH⚪%ÿ
Ḅ⚗⚗ᡈ◀Ḅᦪ(0◀᜜).12.ூᑖ᪆௃Ꮇ"ᐰ$ᐢᑣᨵ(24X4=96ᩩ/01Ḅ54ᩩ(396-54=42ᩩ5617ᐢ17834-2=2ᩩ(ᡠ8ᨵ42+2=217ᵫ<ᓽ>⌱@.A
(24X4-54)4-(4-2)=(96-54)4-2=42+2=21(7)B
8ᨵ217ᦑ21.ூDE௃<⚪GH8ᐢIJ⚪A/K⚪ḄᐵM$ᵨᎷ"OPQᑖ᪆PRSTUV
W>ᵨXYPQAB..13.ூᑖ᪆௃᪷\]^
_`᳛=ᡭTcdeᦪX100%,ᐜᵨ“50-2=48”lT_`cdᦪᯠnᐭ]^PQABᓽ>.A
50-2=48(p)4850X1OO%=96%rB
_`᳛$96%,ᦑ96%.ூDE௃<⚪GHsᑖ᳛J⚪ABt$ᵨuvᑖᦪw(ᡈᐰvᦪw)◀ᐰvᦪwsᑖxsᓽ>.14.ூᑖ᪆௃ᐜyᡂ{|}~ᓫ“1”lTTᔆ|
40X(1+25%)r᪷\Tᔆ|├|37.5%,ᓽy├|}~ᓫ“1”ᑣTᔆ|61-37.5%,ᵨ◀Oᓽ>lT├|.9⚓/e21⚓

9A:40X(1+25%)+(1-37.5%)=40X125%4-62.5%=80ᐗB
/Ḅ├|$80ᐗ.ᦑ80ᐗ.ூDE௃AB{⚪⌕ᐜᓫ“1”ᓫ“1”\⚪`Ḅᦪwᐵᑡ^.1_2]2|215.ூᑖ᪆௃ᵬᦪḄ5HᦪḄὡᵬᦪḄ$ὡ
-2=4
3,4-3=1,¡ᵬᦪx670,>lT¢uḄwᯠPu£AB.2]2A
ᵬᦪḄ$
31
¤=4
3r
4-3=1r¢$
704-1=70rᵬᦪ$:70X4=280.B
ᵬᦪ$280.ᦑ280.ூDE௃<⚪lT¥ᦪḄ᪷\¥ᦪḄ>ᐜlTuḄwᯠPu£AB.16.ூᑖ᪆௃ᵬᙢ§1500ᓟ©ᑣᵬª«u¬§$1500X2ᓟ©ᡠᵨḄ®62+2.5¯᪷\§+®=°±>1²³ª«Ḅ´ᙳ°±6¢¯1500X2-?2+2.5ᓟ©.A
1500X24-2+2.5=3000+4.5,2—6663ᓟ©/.2B
ᓃ³ª«Ḅ´ᙳ°±$666ὡᓟ©/.2ᦑ6663ᓟ©/.ூDE௃¸ᡂ{⚪⌕¹ºᐜlTª«Ḅ°±ᔜ$3¼½◀2Ḅ/¾┯Àl10⚓/e21⚓

10O.1117.ூᑖ᪆௃<⚪>"ᵬ᪷ÁcÂx©᪷ÁcÂy©ᵫ“ᵬᐜᵨÅᵫᵨÅs©,ᐜᵨÅ5©ᵨÅÆÇḄ>1ᵬᒕÇxX(1-9-)ᒕÇ(y-5)É111X(1-S),56/᪷ÁcᒕÇḄ±ᓽxX(1-?)-©=(ᔆয)1X(1-')ÎÏÐÑSTxÒÓx®ḄᐵAÔJ⚪.A
"ᵬ᪷ÁcÂx©᪷ÁcÂy©SxX(1-9)-9=(y-9)X(1-9)8^8__8_9x=9y-819X(x-y)=81B
×ᩭᵬ᪷ÁcÂÙ.ᦑᵬ᪷Ác.ூDE௃<⚪ABḄᐵMᙠHᳮA“s”ḄÜÝᨵḄ⊤ßᑖ᳛ᨵḄ⊤ßᐹáḄᦪ.11918.ூᑖ᪆௃ᨬyã᫜ᑁḄIdḄè᎔ᐭᵬ᫜<ã᫜ᑁêᒕÇ×ᩭḄ1-ᐗ=R91¡îW1ᵬ᫜×ᨵ(9-10X10)4-(1-3|),AÔJ⚪.A:94-(1-1^)9=94-10=10(ᓣ)1_1(9-10X10)+(1-3)2=84-311⚓/e21⚓

11=12(ᓣ)B
ᵬñᘤ×ᨵó12ᓣ.1ூDE௃✌ᐜÎÏ᎔õOlT᫜᎔ᐭᵬ᫜Ḅö$3¼ᓣ$¸ᡂ{⚪ḄᐵM.19.ூᑖ᪆௃/$u¥÷øJ⚪ᑖ┐úuᑖúû6±ᓽᑖ┐Ḅü°±$
6±/ᑖ┐uᑖú0.5±ᓽü°±$
0.5±/ᑖrᵫHýþᑖ┐ᙠ┐☢110ᩭᑖ┐ᙠ┐☢110ᑡᓽ.᜜xᑖᑣ(6-0.5)x=110+1105.5x=220x=40(᜜40ᑖ).ூ+,௃.⚪ὃ1)⊤┐3ᑖ┐Ḅᜳ6..⚪ᐵ8᪷:;<=Ḅᜳ6>ᑮ@AᐵBCD.20.ூᑖ᪆௃ᵫ⚪Gᦪ:1=12ஹ1+3=4=22ஹ1+3+5=9=32ஹ1+3+5+7=16=42…N,n(l+2n-l)Pᨵ஻<᜻ᦪTUᓽ1+3+5+…+=2=”2n(l+2nT)ᵫ⚪GᩩXN1+3+5+…+(2”-1)=2="2Z1+3+5+-+(2M-1)=20132ᓽ”2=20132«=2013ᦑ2013.n(l+2n-l)ூ+,௃.⚪(ᐵ81+3+5+…+(2/7-1)=2=^21.ூᑖ᪆௃᪷:⚪_Na*b@caḄ3d3஻Ḅ2dḄeᵫ᪷:fghij(4*1)=7ᑏᡂᡃnopḄḄqrᓽXḄt.X*(4*1)=7X*(3X4-2X1)=7^ਭ10=7w12⚓/y21⚓

123X-2X10=73X=7+203X=27X=27+3X=9,ᦑ9.ூ+,௃⚪ὃ1z᪷:{|>}~gᯠᢥ᯿~gj(.22.ூᑖ᪆௃ᦪḄᦪ+ᔣ@cᜧḄᦪᓽᜧᦪᦪḄ10dᜧ;<ᦪḄe49.23,ᦪḄ(10-1)=9d49.23,ᵨ◀hᦪ;<ᦪḄᓽᦪḄ(1+10)dᵨᦪ11ᓽ.49.23+(10-1)=49.23+9=5.475.47X(1+10)=60.17ᦑ60.17.ூ+,௃⚪⌕ὃ1ᦪ+ᦪḄᜧᓄᐵ8NᑮᔣḄᦪ(ᜧᦪ)3ᦪḄᐵB.23.ூᑖ᪆௃ᑖ1Ḅᦪ1<ᑖ2Ḅᦪ2<ᑖ3Ḅᦪ3<ᑖ4Ḅᦪ4<,,5|A_21_3.ᑖnḄᦪn<ᨵ(1+2+3+4+5……+7+8+9)<ᦪᙠU¡10,10,10,410¢<ᦪ஺(1+2+3+4+5......+7+8+9)+4_1=2X9X(1+9)+4=45+4=49(<)5ᡠ¥¦w50<ᦪ஺w13⚓/y21⚓

13ᦑ50஺ூ+,௃ᦪᑡGḄᐵ8᪷:§¨Ḅr|ᡈᦪNgrᡈᦪªḄᓄᐵBᯠ«ᑭᵨ<ᓄ«ᑮ®⚪G¯°®⚪஺24.ூᑖ᪆௃±²OD,▢´µᑖḄ☢¶ᡧqḄ☢¶¸¯¹6qNO஺Ḅ☢¶ᑖºᡧqᨴODḄ☢¶¹6q/1QOḄ☢¶ᓽ.ᙊ½6NOOḄᦪ180°-180°-60°X2
=120°¾¿120ᡧq4஺஺Ḅ☢¶6+2
2x3.14X36஺1=3.14X9X3=9.42¾Àᔖ¿2Ã89DC=21,ᡠ¥£>C=38C,1ÄŹ6q/DCḄ☢¶=5¹6q/8CḄ☢¶Zù6qḄ☢¶3¹6q஺DCḄ☢¶T@¾@ÆÇÈ¿ᡠ¥▢´µᑖḄ☢¶9.42-31.2X3x2=9.42-5.2=4.22¾Àᔖ¿(▢´µᑖḄ☢¶4.22ÀᔖÂ.ᦑ4.22ÀᔖÂ.ூ+,௃(⚪Ḅᐵ8¨⍝▢´µᑖḄ☢¶Ê˵ᑖ☢¶Ì¯ᣵ˵ᑖ☢¶«᪷:ÎḄÏ☢¶ᵫ(ᓽ.25.ூᑖ᪆௃iÐÑyAÒÑᓫ“1”ᵬᓫÕᡭ⌕12×ᡂᑣᵬØ×ᡂ121Ù1ᓫÕᡭ⌕15×ᡂÙØ×ᡂ15,ᵬÐÑ1ÙÐÑ2×ᡂw14⚓/y21⚓

14-.+-i-XW-X2+1_715"30,1215,ᵬÐÑ2ÙÐÑ1×ᡂ126ᵬÙᐳ×13+7_999I1ᡂÝÞ=20,ᑣØ6<;×ᡂᐰµḄ20,12×ᡂ10Lâᒕ10,ᵬ«1111.111ÐÑ1âᒕ101260|,Ù«ÐÑ6015~4¾¿×ᡂÐÑ12+1+4ᓽᡭᓺµçXᐳ◤Ḅª.-—k——X2)+(-I1X’1215,4211)+(615)137=6030=ì12+1+(1-20í4-1^1)+151.1=12+1+6015=()(ᡭᓺµçXᐳ⌕1.ᦑîூ+,௃.⚪⌕ὃ1zï▭®⚪-Ю⚪ᐵ8NØ6<;×ᡂᐰµḄÒ.¹ஹῃrfg26.ூᑖ᪆௃¾1¿~ᵨhḄᑖòjóg;(2)~ᵨhḄõᣚஹ÷ᔠjóg;(3)i19992000-1«᪷:hᑖòjóg.:(1)3.2+3.2XA=(1+9+9)X3.2=10X3.2w15⚓/y21⚓

15=32ú5û(2)11X34Xxü512^d)X(34X-511)=(11x(3)1990X1999-1989X2000=1990X(2000-1)-1989X2000,=1990X2000-1990X1-1989X2000,=(1990-1989)X2000-1990,=1X2000-1990,=2000-1990,=10.ூ+,௃×ᡂÿ⚪
⌕ᑖ᪆ᦪḄᱯᑁᙠὶᯠ⌱ᔠ〉Ḅ.!ஹ#$ᑡ27.ூᑖ᪆௃(1)᪷.Ḅឋ01234◀62.5,ᯠ9ᑮ2.4x-4=2x-3,ᯠᔴᦪ1234-2x+4,9ᑮ0.4x=l,ᨬ1234◀60.4,9EF(2)✌ᐜI29ᑮ4-Wx=1.5,.1234K-1.5,9ᑮLx=2.5,ᯠ1234M4,9EF(3)✌ᐜ᪷NOḄឋ09ᑮ5xX9.8=147X1,9ᑮ49x=147,᪷.Ḅឋ0,1234◀649,9E.ET(1)5X(1.2%-2)=2.5X(2x-3)5X(1.2x-2)+2.5=2.5X(2x-3)4-2.52.4x-4=2x-3V16⚓/K21⚓

162.4x-4-2x+4=2x-3-2x+40.4x=10.4x4-0.4=14-0.4x=2.521(2)9X18-4X=1.5$4-[=1.54-dx+ilx-1.5=1.5+4X-1.5^4X=2.5_14XX4=2.5X4x=10(3)147T5x=9.85xX9.8=14749x=14749x4-49=1474-49x=3ூ_௃`⚪ὃbc᪷.Ḅឋ0Edᓽ.1234fஹgஹM3hiᦪᡈ◀63hikl0Ḅᦪ.ḄIm12no.Tpq.rst⌕uv.wஹEx⚪28.ூᑖ᪆௃yᙊ{|☢~lᔖlᡂḄ☢m☢Ḅ☢ᙊ{☢Ḅh~ᙊ{Ḅ~ḄḄᵫ`9dT2X3.14XrX5+2+5r=2O7,Edr,᪷Tᙊ{Ḅᵫ`Exᓽ.ETyᙊ{|☢~lᔆᔖᑣT2X34XrX5+2+5r=20715.7r+5r=207V17⚓/K21⚓

1720.7r=207/.=10ᩭᙊ{Ḅl:3.14X102x5=1570(ᔖ)xTᩭᙊ{Ḅ1570ᔖ.ூ_௃ᡂḄ☢m☢Ḅ☢ᙊ{☢Ḅh~ᙊ{Ḅ~ḄḄEx`⚪Ḅᐵ¡.29.ூᑖ᪆௃¢£!i¤ᐳᣎ§ᦪ#¨ᓫª“1”y£!i¤ᐳᣎcxᐗᵫ⚪q®Th¤ᣎḄ¯ᦪ°xᐗ±¤ᣎḄ¯ᦪ[(kx+600)³51]ᐗµKᣎ§¯ᦪ¶·ᣵh¤±¤Ḅᣎ§¯ᦪ¹¤!¤Ḅᣎ§¯ᦪᵫ`ᑡdE.ETy£!i¤ᐳᣎcxᐗᵫ⚪q92|21x-7lx-(7X+600)X2=600+500,7x-7lx-300=1100,471=1400,x=2450FxT!i¤ᐳᣎc2450ᐗ.ூ_௃º⚪ᑭᵨ½EḄTl±¤h¤ஹ¹¤KḄh~ᡠ6±¤ᣎ§Ḅ22¯ᦪK¯ᦪḄk¿fs300ᐗ᝞Á±¤Âᣎ300ᐗÃᣎᑮK¯ᦪḄk£᪵h¤±¤ᐳᣎKᦪḄ(7)+c1),ᐸÆ1i¤◤⌕ᣎ(600+300+500)ᐗÈK¯ᦪḄ[1-(V+7^)],ᵫ`ᵨ◀K¯ᦪᐹEx᝞tT2|2(600+500+6004-2)4-[1-(71+74-2)]3=(600+500+300)+[1-7]=1400+7=2450ÌᐗÍV18⚓/K21⚓

18xT!i¤ᐳᣎc2450ᐗ.^30.ூᑖ᪆௃ᐜᑭᵨᙊ┵ḄÏ=kУ᫜ÒḄÓ£᫜ÒḄkÔḄ,◀6ÒÕḄ|☢£ÖÒᙠÒÕḄ×£ÖÒḄ×ØᓰcÒÕÚ-Ḅ1-61
,ᵨ£ÖÒḄ×◀61-6"
,ÒÕḄ׿ᵨÒÕ_1Ḅ×MÛÒÕḄÜÝÞᑖḄ×.ETÒÕT1_19.6X5X3+4+1-ßÍ5—16+4+6_5=4+6=4.8ÌᑖÍFÒÕḄÜÝÞᑖḄT_14.8X6=0.8ÌᑖÍFxTÒÕḄÜÝÞᑖḄ0.8ᑖ.ூ_௃`⚪à⌕ὃbᙊ┵ḄḄᙠá▭ãäḄåᵨᐵ¡ᐜ£ÖÒᙠÒÕḄ×ÒÕḄ×æ⚪ᓽ⌲è9E.31.ூᑖ᪆௃⌕ᡭêᢚìí®⍝ᩭḄï¯ðᙠḄï¯ᵨðᙠḄï¯◀6ᩭḄï¯,ᑡExᓽ.ETᩭñ1òᱥôõḄ¯ᦪT220+180=400ÌᐗÍðᙠñ1òᱥôõḄ¯ᦪT220+80=300ÌᐗÍᢚᦪT300+400=75%=öwᢚ.xTá▭÷ᱥoøùᡭöwᢚ.ூ_௃úᡭᢚᢣðïïḄßᑖüØ⌕ýþuåÿᑡᓽ.32.ூᑖ᪆௃⚪ᑡᵬᨵxᑣᨵ900-x
ᵬ55_3_Ḅ8,ᑣᵬᨵ1+8
xᳮᨵ900-x
X1+10
,!19⚓/$21⚓

19&᪵()Ḅ*+᪵,ᵫ.ᑡ/(1+8)x=(900-x)X(1+101);ᵬᨵxᑣᨵ(900-x)<(900-x)X(113(900-x)X10138x=1170-10%117401=1170x=400900-400=500();ᩭᵬஹ()ᔜᨵE400ஹ500.ூFG௃HIJKᦪ᪷NᡠPᩩRᑡSTUᐵWXYᡂ⚪Ḅᐵ[.33.ூᑖ᪆௃ᐜ]S⚜_Ḅ`aᡠᵨḄ`a*X⚜_`aḄ1+(1+9)=10,ᡠd⚜_`aX20+(1-10)=200ᑖfgh]Sᡠᵨ`aᡠᵨ`a*X⚜_`aḄ1+(1+3)=4,ᓽij200X(1-4)=50ᑖfᨬl]S72ᓟnᡠoḄᑖ᳛ᓽ3724-(1--51)ᓽ.;qris9,ᡠᵨḄ`a*X⚜_`aḄ1+(19)=10,ᡠd⚜_`aX920+(1-10)=200ᑖf.rtis3,᝞vYᐰᡠᵨ`a*X⚜_`aḄ1+(1+31)=4,ᓽij3200X(1-4)=50ᑖf._3yᓾij{30ᑖf|}ᨵ30+50=lḄ~is{rt.3ᡠdᵬஹ(ᙢḄX72+(1-5)=180ᓟn.;ᵬஹ(ᙢ180ᓟn.ூFG௃.⚪Ḅ⚪ᐵ[+_]S72ᓟnᡠoḄᑖ᳛ᯠlᵨ◀]Sᫀ.!20⚓/$21⚓

20!21⚓/$21⚓