北师大版2022-2023学年辽宁省沈阳市数学七年级秋季开学摸底考试(D卷）含解析

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ᓣ௃ᓅᜧ᱐2022-2023ḕ□ᦪ᥎ὃDᔁ1.஺90x80%=3.2+3%=4000x3.75%=1-80%=3]_5-60%=4/3+25%=80%+15%=5+20%=ஹᡈ!2."#$ᦪX஺—x—4.5'6=2x2-3”45=53.ῃ*+஺43_j_+5+4-210x99+102__7.32x0.25x1.25-1⚓//20⚓

1ஹ⌱⚪4.0123Ḅ56725,89Ḅ3:7;<஺A.25B.425C.81255.=1>?@A8Ḅ>1ᑁ?CᦪḄ7321,D7=1;<>?@஺A.E?B.F?C.┦?D.HῪ6.2008JAKLᓅNᡂPQRS-29TᝍVWAD=JḄ-=XC
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᪷bcᡂ=1>?@Adefᨵ0᪷bA=᪷bḄ6C73ᑖh,j=᪷bḄ6C74ᑖhA->᪷bdk⌱mḄ6C7;<஺A.1ᑖhB.2ᑖhC.3ᑖh54-9+=8.。-9A.2B.1C.15D.129.noKA;<Ḅ☢:ᜧr715sh஺A.tuvḄᓷxᙢ☢B.z᪥|}Ḅᙢ☢C.ᦪz~Ḅ☢10.ᑡᑖ᳛KAᨵ100%Ḅ7;<஺A.᪛ᩈḄᡂo᳛B.znḄ᳛C.Ḅ6᳛D.ὅḄៜ᳛11.ᨵ012@A-=12@Ḅ☢:7-12@☢:Ḅ9A89Ḅᕜ67;oA.19B.91C.13D.31"ஹ#$⚪12.ᓅNA7ᨴ135Aᐰ¡>ᓝ-=£¤ᓟ>¦§h஺¨©ªḄᦪᑏ¬;

2I_L15-18=30:;<14.6,\15.ᨵ4¾ᦪ¿ᓱᱏAᑖÂ7LஹÃஹÃஹÃஹÄᡂ=1ᨬᜧḄ>¶ᏔᦪAÇD1ᦪÈ72ḄᦪAÉ73ḄᦪAD1ᦪ7;<஺;_<516.15ᑖ=;<600mL=;

3জ&''ᖪ180ᔖ*+Ḅ᪗,-./0ᓟ2?ঝ&''5▭.77ᓟ2*78᪗9ᑖ;

426.ᨵ610¡⌕£¤᪶⏚§K஺¨©ª᪵ᕒ¨ᑖᜧ¯°ª᪵6¡*ᢥ᯿VE³g,3©ª᪵ᕒ´µ£¤*28ᑖ°¶ᡂª᪵¸¹ᔩh»ᙠ☢UḄ¼ὃ8¾¿ᑏÁᩭ஺»ᙠ☢UḄ¼ὃ8¾¿ᑏÁᩭ஺ᡃḄ¼ὃ8¾.ᡃḄ¿.஺5⚓/#20⚓

5ᫀ:3201.72Å3Å150Å0.20Å1Å0.95Å25ூᑖ᪆௃᪷ᦪஹᑖᦪ9ᑖᦪÉÊË◀qḄÍᑣÍᓽÐ஺ூÑ௃90x80%=90x0.8=723.2+3%3=3.2+10஺100=3.2x33204000x3.75%=4000x0.0375=1501-80%=1-0.8=0.235-60%33=5-5=0ᵯ+25%31=4+4=180%+15%=95%=0.95ᫀ1⚓*ᐳ14⚓

6520%1=5+l=25ὃÕvᦪஹᑖᦪ9ᑖᦪÉÊË◀q*ᐵ×.ØÙÚÛÍᑣÜÝ£¤Í஺2J_2.x3•x12x3ூᑖ᪆௃(1)᪷ÞḄßàឋá*ᐜbÞãᦋᑏᡂåᦪæËḄHã*ᓽ4.5%=5X6,ᯠe_¾åè´µ◀4.5,ÐÁ_¾ḄÅj_(2)_¾åèᐜ´µÉC3%ᯠe´µÊé*ᨬe´µ◀3,ÐÁ_¾ḄÅ2(3)ᐜëᓄ_¾*ᯠe_¾åè´µ◀*ÐÁ_¾Ḅ஺ூÑ௃]_(1)4.56=2x4.5%=5X64.5%=34.5%+4.5=3+4.52x3_1_1(2)2-3^=4112—3X+3X=4+3X114+3*=211114+3%—4=2—42j_x=4-433^=4ᫀ2⚓*ᐳ14⚓

73ஹ+3=4+3j__[x4x31x=n36—x—(3)x-5=526-x-5=52262—x———5+5=5+565x=5x2x=33.1000Å21Å10Å2ூᑖ᪆௃10x99+10,ᑭᵨËᑖòó£¤ëÅ20XgW542,ᑭᵨËᑖòó£¤ëÅ32x0.25x1.25,b32÷ᡂ4,8,ᑭᵨËøᣚᔠó£¤ë;,ᐜÊ*üË*ᨬe◀஺ூ௃10x99+10=(99+1)x10=100x10=1000431=20x—+20x——20x—542=16+15-10=2132x0.25x1.25=(4x025)x(8x1.25)=1x10=10ᫀ3⚓*ᐳ14⚓

8=—x77=2à⚪ὃÕv᦮ᦪஹᦪஹᑖᦪḄëÿ
ᑖᦪᑣᔠ
᦮ᦪḄ
᪵〉ᵨᑖᦪᦪ஺4.Cூᑖ᪆௃!"Ḅ"#$%&'(Ḅ$)*+,ᓽ.஺ூ/+௃01!"Ḅ&'$2245,78Ḅ"#$223453=84125=ᦑC஺?@!"Ḅ"#$A&'$ḄᐵC2+,D⚪ḄᐵF஺5.Bூᑖ᪆௃HIJḄᑁI2180஺MNH1ᑁIOᦪḄ$234241,PQRSᦪ2(3+2+1)SᵨᑁI◀XRSᦪYZ[Sᦪ\ᵨ[Sᦪ]3,YZHIJᨬᜧᑁIḄOᦪ᪷)HIJḄᑖabZHIJḄac஺ூ/+௃180஺+(3+2+1)=180°+6=30°ᨬᜧḄᑁI2430஺*3=90஺h2[1iIHIJ஺,ᫀk4⚓ᐳ14⚓

9ᦑBnoHIJḄᑁIXpᢥ$rᑖsḄ+⚪tu⌕ᑖsḄRw2xyXpᢥ᯿{Q$r|}ᑖsYZ[Sᦪ2+⚪ḄᐵF஺6.A[ᨴSHᨴS2ᜧᨴᨵ31ᜩᐵF2ᨴSḄᜩᦪḄ2ᨴSᨵ28ᜩḄ2ᨴSᨵ29ᜩᡠX⌕ᑨ200822ᓽ.Y+=ᵨ2008◀X4,2ᔲᨵᦪᨵᦪ2ᨵᦪ2ᵫ*Y+.ூ/+௃2008+4=502ᨵᦪ20082ᨴSᨵ29ᜩ=31+29+31=91
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13ᨴᐳᨵ91ᜩ.ᦑ⌱4A.7.Aூᑖ᪆௃HIJHḄᐵC40ᜧkH0kH)*+,ᓽ.஺ூ/+௃A.4-3=1,=B.4+3=7,4-3=1,2ᜧ17,⌕Y=C.4+3=7,4—3=1,3ᜧ17,⌕Y4ᦑAD⚪ὃHIJHḄᐵC+,D⚪ḄᐵF2noHIJHḄᐵC஺8.Bூᑖ᪆௃ᑖᑖᦪḄ
4ᑖᑖᦪᑖ¡ᑖ¢஺,ᫀk5⚓ᐳ14⚓

10ூ/+௃54994-9=9=1ᦑBD⚪ὃᑖᑖᦪḄ
஺9.Aூᑖ᪆௃᪷)¥¦§¨Xp©☢#ᓫ¬Ḅ®¯°±ᔠ²▭ᦪ)ᮣ¦Ḅ|}⌱µᓽ.஺ூ/+௃¥¦¶·¸¹Ḅᓷ»ᙢ☢Ḅ☢#ᜧ½215¾஺ᦑA?¿no©☢#ᓫ¬Ḅ®2+,*⚪ḄᐵF*⚪ÀÁ±ᔠ²▭ᦪ)஺10.Cூᑖ᪆௃᪷)¥¦¶ḄᔜÄÅᑖ᳛ḄÂÇ|}ᑨᓽ.•ூ/+௃A.᪛ᩈḄᡂ¦᳛2ᢣͦÎᦪᓰRÎ᪛ḄÅᑖÐ.ÑÒÓ100%4B.Õ¥ḄZÖ᳛2ᢣZÖ×ᦪᓰÕ¥RᦪḄÅᑖØ.ÑÒÓ100%4C.ÙÚÛwḄÜ'᳛2ᢣÜ'wᓰÝÛwḄÅᑖØᨵ.ÑÒÓ100%=D.ßὅḄáៜ᳛2ᢣáៜ×ᦪᓰßὅR×ᦪḄÅᑖØ.ÑÒÓ100%஺ᦑC஺D⚪ὃÅᑖᦪ+,D⚪ḄᐵF2noÅᑖ᳛ḄÂÇ஺11.Dூᑖ᪆௃,ᫀk6⚓ᐳ14⚓

11!J☢#='X'!Jᕜ'='X4,)*Y+஺ூ/+௃᪷)⚪Â01!JḄ☢#$2941,±ᔠ!JḄ☢#åæh01!JḄ'$2341,ᵫ!JḄᕜ'åæ.N78Ḅᕜ'$ç2341஺ᦑDno!JḄ'ᕜ'Xp'☢#èḄᐵC2+éD⚪ḄᐵF஺12.316300000032ூᑖ᪆௃᪷)᦮ᦪḄᑏ4ëì¬ᑮî¬[ï[ïᙢᑏð[1ᦪ¬ñ[1ᓫ¬çᨵᙠP1ᦪ¬ñᑏ0=ḕᶍõ¬ö☢Ḅ÷ᦪYøùᦪᵨ“ûüᐭ”ÿᓟ
ᦪḕᶍᦪᑏ“'’஺ூ௃aH-ᓟ
ᑏ!31630000003163000000=32ᡠ*ᓅ,-./012347ᨴ1375ᐰ-.:;.<ᓝᓟ
>?@஺ABḄᦪᑏ3163000000,ᵨ“FGHᐭ”KLMᑮOP32>?@஺Q⚪S⌕ὃV᦮ᦪḄᑏK*Xḕᶍ☢ḄᦪZᦪᵨ“FGHᐭ”K[ᓟ
ᦪḕᶍᦪᑏ“”஺13.8ூᑖ᪆௃`ᦪPaᨵ1cdefghiᦪḄᦪ15j*ᑏᡂ1*15ᡈ3*5,ᐸo1c15pqP`ᦪᡠ*aᨵ3x5stuv஺ூ௃15=1x15w᣸◀z15=3x53+5=8|ᫀ~7⚓ᐳ14⚓

12e⚪ὃV`ᦪḄᑖᦪP`ᦪPe⚪Ḅᐵ஺14.536ூᑖ᪆௃᪷◀KᑖᦪcḄᐵ*XdᵨḄeឋ`஺ூ௃15-(18+6)=15+3=518x(30-15)=18x2=36ᑖᦪḄᑖ◀ᦪஹḄ⚗ᑖ¡◀ᦪஹḄ⚗஺15.840ூᑖ᪆௃᪷2ஹ3¢ᦪḄᱯ¤2Ḅ¢ᦪᱯ¤!ᔜḄᦪP0,2,4,6,83Ḅ¢ᦪᱯ¤!ᔜhᦪḄᦪḄcP3Ḅ¢ᦪ⌕¦sᦪᨬᜧᙠ4,8,0,5o,ᨬᜧḄP8,sᦪḄP8,ᑖ᪆|஺ூ௃᪷ᑖ᪆jªP8Ḅᦪᨵ!804ஹ840ஹ850ஹ8548+0+4=12,3᦮◀8+4+0=12,3᦮◀8+5+0=13,q3᦮◀8+5+4=17q¢3᦮◀஺aᨵ804c8403᦮◀804<840shᦪP840|ᫀ~8⚓ᐳ14⚓

13e⚪ὃV«shᦪo¬ᡂᨬᜧḄᦪᓽ¦2Ḅ¢ᦪ®P3Ḅ¢ᦪ᪷2c3¢ᦪᱯ¤|஺16.4.0.6625ூᑖ᪆௃¯°ᓫᓄ³°ᓫ´᳛³°ᓫᓄ¯°ᓫ◀*᳛஺Q|஺ூ௃(1)³°ᓫᑖᓄ¯°ᓫ◀*᳛60஺15-60=4ᡠ*!15ᑖ=^(2)³°ᓫmLᓄ¯°ᓫL◀*᳛1000஺600-1000=0.6Lᡠ*!600mL=0.6L(3)¯°ᓫdnPᓄ³°ᓫcrrP´᳛1000஺58xl000=625cm35ᡠ*!8do?=625cm3e⚪S⌕ὃVÃᵨᓫÄḄᣚÆÇÈÃᵨᓫÉÄḄ᳛Pe⚪Ḅᐵ஺17.7.257.253ூᑖ᪆௃ÊᑮËÌÍᦪḄËÌ⁚ᙠ✌cÐÑÍᙊÑᢥ᯿ZÍᦪḄᦪḄ?K|ᓽj஺ூ௃7.252525...=7.25|ᫀ~9⚓ᐳ14⚓

147.252525...«7.253e⚪ὃVËÌÍᦪ|e⚪ḄᐵP×ØËÌÍᦪḄᭆÚ஺218.63ூᑖ᪆௃3Z8hKÜḄcPÝÞ᪷ᑖᦪ´᦮ᦪḄßàᵨ´KáÆ54ZâḄMPÝÞ᪷hᦪ´ᑖᦪḄßàᵨ´KáÆ஺ூ௃34x8=69326x5=3ᑖᦪ´᦮ᦪḄßà!ZähÜᦪḄcḄåæçÆhᦪ´ᑖᦪḄßà!ZhᦪḄäᑖÉäPÝÞ஺19.100ூᑖ᪆௃èéêëᓫ“1”ìᢚ⊤ïðêPéêḄ80%,ḕḄêòPéêḄ(1-80%),᪷hᦪḄᑖÉäPÝÞZshᦪPÝÞᵨ◀KZóéê«ᵨéê´80%ôPðê஺ூ௃25-(1-80%)=25-0.2=125(ᐗ)125x80%=100(ᐗ)|!᝛÷▭ᵨù100ᐗ஺e⚪ὃVùúûᩖḄᑖᦪý⚪ᐵPZóéê஺|ᫀ~10⚓ᐳ14⚓

1520.2:3=4:6ூᑖ᪆௃᪷ZhᦪḄiᦪḄ?Kcþÿᓽ஺ூ௃12Ḅᦪᨵ1ஹ2ஹ3ஹ4ஹ6ஹ12222:3=-4:6=-ᐸ3,3ᡠ2ஹ3ஹ4ஹ6ᡂ2:3=4:6ᡷḄ⚪஺21.82ூᑖ᪆௃21ᙠ!"#$%&'("ᨬᜧḄ+$%,!"+$%Ḅ-#./#$%Ḅ0,ᡠ!"+$%Ḅ-#18ᔖ3422ᵫ⚪67,#&'2",8&'1᣸,ᵫ:7ᐳ&'2"஺ூ௃!"+$%Ḅ-#18ᔖ3420-8=2<"=……4<ᔖ3=,ᨬ>&?2"!᪵Ḅ+$%஺A⚪ὃCDEF+$%Ḅ%GHḄIᵨ,KLὃCDEFᙠᑗNOPLḄQRST஺22.Uூᑖ᪆௃21᪷WXYZOPḄᱯ\,YZ]ᑮYZXḄ_`a.,YZ]Ḅbcᚖe/YZX,ᙠYZXḄfgh?iOḄᐵkYZ],lmbnᓽ஺22᪷WopḄᱯ\,qr᪛Ḅtu]vL┐op90஺,x]Ḅyz{|,ᐸ}ᔜᑖᙳq:]ᢥaK$ᔣopaKḄᦪ,ᓽh?opḄOP஺ூ௃ᫀ11⚓,ᐳ14⚓

16O᝞t:XYZOPஹop(ᦪḄOPᐵk1YZ](YQ])Ḅyz஺23.(1)70ᓟ4(2)10%ூᑖ᪆௃(1)᪷W“(8ᔖ3-80)x70%=᪗%”¢ᐭᦪW,ᓽ4(2)¤᪗%¥ᓫy“1”,᪷W“(ᜧᦪ(rᦪ)(ᓫy"1”Ḅ¨''ª«஺ூ௃(1)(180-80)x70%=100x0.7=70(ᓟ)¬Ḅ᪗%Qx170ᓟ஺(2)(77-70)-70=7+70=10%®¯᪗%10%»:⚪Ḅᐵk᪷WH,¢ᐭᦪW,±?᪗%,ª²¤᪗%¥ᓫy"1”,᪷W“(ᜧᦪ(rᦪ)+ᓫy“1”Ḅ¨''ª«ᓽ஺24.0.4713ூᑖ᪆௃ᫀ12⚓,ᐳ14⚓

17᪷W⚪6,ᐜ±ᙊ┵P¸ᚮḄ%G3x3.14x218.84-3.14-22x1.2=11.304<º$3=:ᯠᑭᵨ%G{R,±¸½Ḅ811.304+8+3=0.471<3=஺ூ௃3x3.14x(18.84-3.14-2)2x1.2-8-3=3x3.14x32x1.2-8-3=0.471(3)¸Ḅ¾10.4713஺A⚪¿⌕ὃCᙊ┵ḄQᵨ,ᐵk᪷W%G{RÁ⚪஺25.(1)জ(2)88Âூᑖ᪆௃জÄÅÆÇÅḄᦪ¨Æ1ᡠÈᝄÅÊᦪḄ44,±ËÌÅᓰᡠÈᝄÅḄᑖ᳛,Ï᪷Wᦪ¨◀ᑖ᳛Ëᑮᓫy“1”Ḅ¨,ᓽÈËᝄÅᦪ஺ঝÌÅÄÅÆÇÅḄᦪ¨ÆÒ24%,ÄÅÆÇÅḄᦪ¨ÆÓᓫy“1”?ÌÅᦪ¨aÔ/ÄÅÆÇÅḄᦪ¨ÆḄ21-24%,Ïᵨᦪ¨◀ᑖ᳛ËᑮÄÅÆÇÅḄᦪ¨Æ,ª²±ËÈËᝄÅᦪ¨஺ঞÌÅÖÄÅḄᦪ¨119@16,7ÌÅᓰ19×,ÄÅᓰ16×,ᵨ38◀19,Ë(×12Â,ÏØ16±ËÄÅᦪ஺Ù±{?ÇÅᦪ¨஺ூ௃21᪷Wᑖ᪆7⌱ÛজᡈঝݱËÈËᝄÅᦪ¨஺22⌱ÛজÞß=88(Â)àᙠ!áᝍIãäᐳÈËᝄÅ88Â஺ᫀ13⚓,ᐳ14⚓

18A⚪ὃCDᑖᦪ◀åḄQᵨ஺ᑭᵨᦪ¨◀ᦪ¨YQḄᑖ᳛1A⚪Ḅᐵk஺26.{Sæὃ¯ç1✌ᐜéê?3yë᪵ᕒíᑖîᜧïSë᪵Ḅðᦪ,Ïéê?28ᑖî3yë᪵ᕒSë᪵Ḅðᦪ஺nñ128ᑖî{Sòᡂë᪵óô஺ூᑖ᪆௃✌ᐜéê?3yë᪵ᕒíᑖîᜧïSë᪵Ḅðᦪ,íyë᪵ᕒíᑖîᜧïSë᪵Ḅðᦪx3=3yë᪵ᕒíᑖîᜧïSë᪵Ḅðᦪ,ᯠÏéê?28ᑖî3yë᪵ᕒSë᪵Ḅðᦪ,3yë᪵ᕒíᑖîᜧïSë᪵Ḅðᦪx28=28ᑖî3yë᪵ᕒSë᪵Ḅðᦪ,ᨬÖ610ðõᓽ,l:஺ூ௃ᡃḄæὃ¯ç1✌ᐜéê?3yë᪵ᕒíᑖîᜧïSë᪵Ḅðᦪ,Ïéê?28ᑖî3yë᪵ᕒSë᪵Ḅðᦪ஺6x3=18<ð=18x28=504<ð=504ðீ610ð,:ᡃḄnñ128ᑖî{Sòᡂë᪵óô28ᑖî{Sòᡂë᪵óô஺:⚪ὃCḄ1øyᦪÖøyᦪḄØåéê,ᐜéê?3yë᪵ᕒíᑖîᜧïSë᪵Ḅðᦪ1:⚪Ḅᐵk஺ᫀ14⚓,ᐳ14⚓

19ᫀ15⚓,ᐳ1⚓