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（二）含解析

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7ëìḄBCÃØ(ᓽ஺(1)(2)1(4)2.17=0.31111(3)(7+8)0.75X0.6=0.452-3-2+31=0X8=63ম2.4¨60ᔖ(6)A2A(8)0.66+4.4=5.06(7)2X34-2X¨=44.5dm30.5£=92H3=ñூ/0௃2⚪ὃ5ᦪஹᑖᦪéê◀CḄ¬ò
óFᮣõöᵨö÷øÃØù;7ëìḄBC஺22.ூᑖ᪆௃(1)ᐜ᪷éCḄឋüiýþÿ☢Ḅ᜜Ḅ(2)ᐜ◀ᡂ᪷ᑖ(3)ᐜ᪷320X0.034ᡂ3.2X3.4,᪷ᑖ(4)᪷ᑖ஺#Ḃ_L2()প-3lx[8-(16-8)]&43_Z_=3x[8+8-16]8_7=3x[1-16]8_9=3x16:13⚓/=20⚓

133=761(2)134-4+13!x4Jj1_6J1=131x4+131x4762=(13+13)x4_1=1x41(3)3.4X6.8+320X0.034=3.4X6.8+3.2X3.4=3.4X(6.8+3.2)=3.4X10=34_1_1(4)3X9X(3+>1_1=3X9X3+3X9X9=9+3=12ூ@A௃C⚪ὃFGHᑣJᔠLMNLOPQLᑣᮣSLᵨᡠVḄLWXYZ[஺23.ூᑖ᪆௃(1)]^Ḅ_`ᐜab0.5,ᯠe]^Ḅ_`ab◀f3஺(2)ᐜ[]^g`Ḅhᯠe]^Ḅ_`ab◀f1.6o3.(3)ᐜjklmᓄᡂomᯠe]^Ḅ_`ab◀fp஺()(1)3x4-0.5=22.2:14⚓/=20⚓

143x4-0.5X0.5=22.2X0.53x=ll.l3x4-3—11.14-3x=3.7(2)x+60%x=1201.6x=1201.6x4-1.6=120+1.6x=7533|5(3)5)x=s)63_358=5x6X3122128x4-8=2+84x-3ூ@A௃tuvwomḄxCឋzf{klḄxCឋz|(}C⚪Ḅᐵ஺Hஹᑖ᪆⚪(11ᑖ)24.ூᑖ᪆௃(1)᪷ᵨᦪ⊤ᱥḄ]ᦪḄ:ᦪ|ᑡ:ᦪ|Y⊤#Z@Ḅᓽ஺(2)᪷Ḅᱯ@ᑮḄo@Ḅᚖᙠ¡6Ḅ¢`£#ᙊḄᙊ¥¦§¨|2©Ḅᙊᓽ஺(3)᪷ª«Ḅᱯ¬®@¯ᢥOb┐ª«90°,@PḄ´ᐸ¶ᔜ¸ᑖᙳ®º@ᢥa]ᔣª«aḄ¼ᦪ᪷½¾Ḅᱯª«eḄḄᔜ⚔@ᔣÀ½¾3©ÁÂÃᔜ@ᓽ஺(4)᪷ÄᜧÆÇÈḄNÉÊ]ᢥ1)3ÇÈeḄ|ÊQËᑖÌÍ2Q1ḄÊ]º¦ᓽ஺᪷Ê]Ḅ☢ÎmÏ#ÐḄ☢QÇÈeḄ☢,:15⚓/=20⚓

15ᵨÇÈeḄkÐ☢ᓽ஺()Ñ1ÒᵨᦪÑ1,6Ò⊤4@஺Ñ2Òf6ͦ#ᙊḄÑÓÔ⁐¸ᑖÒ஺Ñ3Ò¦#¬®¯@Ob┐ª«90°eᔣÀ½¾3©eḄÑÓÖ⁐¸ᑖÒ஺Ñ4Ò¦#Ê]ᢥ1)3ÇÈeḄÑÓ×⁐¸ᑖÒ஺3X6=181X2=22)18=1)9ᡠfÇÈeḄÆÐ☢Ḅk|1)9஺ᦑÑ1,6Ò,1)9஺ூ@A௃º⚪ὃFḄÙÚ@)½¾eḄஹª«W¼ᦪeḄஹஹᦪÆஹḄÄᜧÆÇÈo஺25.ூᑖ᪆௃Ñ1ÒᙠᙢÀᢥ᯿“Àᓅßᓭgá¢â”äW]ᔣMNåæ@|V᪥஺᪷ÀQklèḄᐵéäWê▭஺Ñ2Ò᪷ê▭ÆklèḄᐵéäWÀ᪷]ᐵéᓽäWÎìḄ஺()Ñ1Ò3X300=900ÑíÒî)ïðᙠV᪥ᓭñá50°]ᔣ900íᜐ஺Ñ2Ò750+300=2.5ÑᔖíÒ᝞):16⚓/=20⚓

16ᦑᓭñá900oூ@A௃C⚪õ⌕ὃFÀஹê▭Æklè÷øḄᐵéùú᪷]ᔣḄûüäWᱥḄ஺ýஹ(}þ⚪Ñ28ᑖÒ26.ூᑖ᪆௃ᦪV=ᑖÿᓫ“1“ᱥᳮᑖᦪᑖḄ60%8ᑖᵨᦪᑖ60%,8ᑖᓽᱥᳮᑖᑖᓫ“1"ᦪᑖᑖḄ1+ᵨ◀!"ᓽᑖ஺$%120X60%+8=72+8=80ᑖ21204-1+5
&=120+5=100ᑖ'%2024()ὃᱥᳮᑖ80ᑖᑖ100ᑖ஺ூ,-௃/⚪1⌕ὃ34ᑖᦪ5ᑖᦪ6ᔠ8ᵨ⚪9:;<ᦪ=>Ḅ5ᑖ?@Aᵨ!"B:;<ᦪḄ@ᑖ?@A=C<ᦪᵨ◀!"஺27.ூᑖ᪆௃᯿C᪵ḄGHIJGH;K᪷MGH;KNOPQRᡂTUᵫWᑡYU$Z[⚪஺\17⚓/20⚓

17$%`ᵬbcᙢefXᓟi஺150%3=x%2+33x=150X53x=750x=250'%ᵬbcᙢef250ᓟi஺ூ,-௃$'W⚪ḄᐵtᐜᑨwxcyeᐵὶḄ{ᡂ|Uᓽc<{Ḅ};KᑣᡂUc<{Ḅ;KᑣᡂTUᑡYU$'ᓽ஺28.ூᑖ᪆௃ᙢḄ☢}800iᓫ“1”ᓫ“1”9:Ḅ=yḄJ.☢}J=800ḄWAᵨ!"ᵨ☢}yḄ☢}JᒕḄ☢}ᒕḄᢥ2%1Ḅ☢}y⁰ᒕḄ☢}ᓫ“1”ᐜ=Y2]_1ᦪ2+1=3IJஹ⁰ᑖᔜᓰᒕ☢}Ḅᒕ☢}9=YJ᪷M;<ᦪḄ@ᑖ?@Aᵨ!".$%yḄ☢}%800X4=200iᒕḄ☢}%800-200=600iᦪ%2+1=32yḄ☢}%600X3=400i2y⁰Ḅ☢}%600X3=200i'%¡y¢☢}ᑖ200iஹ400iஹ200i.ூ,-௃/⚪⌕ᐜ=YyḄ☢}ᯠ¤=YᒕḄ☢}ᒕḄ☢}ᢥ᯿2%1ḄUᑖ¥=Yᓽ.29.ூᑖ᪆௃✌ᐜ᪷Mᙊ┵Ḅª}«¬%/=3h=Y®¯Ḅª}᪷M°ªḄª}«¬:V=sh,²³S,ᦪMᑖ¶ᐭ«¬$'஺X$%33.14X31.4+3.14+22¸3.6+4X2.5-^-xl=33.14X25X3.6+10\18⚓/20⚓

18=94.2+10=9.42i'%CQ®¯Ḅ¹9.42i஺ூ,-௃W⚪1⌕ὃ3ᙊ┵Ḅª}«¬ஹ°ªḄª}«¬ᙠ»▭½¾)Ḅ8ᵨᐵt¿À«¬஺30.ூᑖ᪆௃1᪷M⊤)ᦪM=YÂPÃ᪻ᓟÅᦪḄÆÇ$'஺2᪷MÈ!⊤)ḄᦪMÉ,ஹÊË஺3ᑡU¬$'஺4᪷M=;<ᦪÌ;<ᦪA5ᑖ?@Ḅ!"ᑡ¬!"஺J020|3040$%11=:5ÍÎÍ1஺;KᡠÐÃ᪻ÂPÃ᪻ᓟÅᦪᡂTUᐵÑ஺(2)ÉYḄᔜ,ÔᙠÕ;ᩩ×ËØ஺3`Ù7.5ᓟÅÃ᪻◤xᐗ%10%l=x%7.5lx=10X7.5x=75'%Ù7.5ᓟÅÃ᪻◤75ᐗ஺412-104-10=20%'%ÞÂß420%஺ூ,-௃/⚪ὃ34ᡂTUᐵÑḄᑨKTUᐵÑàáஹᑭᵨU$Z[⚪ஹ=;<ᦪÌ;<ᦪA5ᑖ?@Ḅ!"◤ᮣ¾äå஺\19⚓/20⚓

19\20⚓/20⚓