2023届江西省宜春市数学七年级上册期末质量跟踪监视模拟试题含解析

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2022-2023
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(4)861
(5)302ூᑖ᪆௃(1)᪷Bজ¯°ᦪª:L.(2)᪷Bঝ¯°ᦪª:L.(3)᪷B¹ºR»ᙠn-1ᩩzᐸ½RḄ¾¯)«¹¿ºRÀÁḄ¯°ÂÃÄÅÆu%[)ÇᎷ@)|஻=5,6/ᙳᡂË)Ꮇ@ᡂË.(4)᪷B⚪D)Ìᐭ}DHᓽ.2(5)᪷B⚪D)Ìᐭ஻x(஻-1)Hᓽ.ூH௃(1)ᵫজÎ)kᐳᨵ10ᩩ¯°)ᡠÏ᪥%ᐳ⌕¥᣸10ÑÒÓ.(2)ᵫঝÎ)kᐳᨵ15ᩩ¯°)ᡠÏ᪥%ᐳ⌕¥᣸15ÑÒÓ.(3)᪷BজÔঝÎ)Õe᪥ᨵ஻Ö×ᳫÙªᓫÚÛÒÓ)ᑣ¹ºR»ᙠn-1ᩩzᐸ½RḄ¾¯)«¹¿ºRÀÁḄ¯°ÂÃÄÅÆu%[...Õe᪥ᨵ“Ö×ᳫÙªᓫÚÛÒÓ)ᑣÏ᪥%ᐳ⌕¥᣸ÜÑÒÓ.2

12|“=5,6/ᙳᡂË)ᡠᎷ@ᡂË.(4)Ýn=42Ìᐭᐵkn(n-l)_42x(42-1)=86122Þᐰà{eáᐳ_â861[.(5)µG¨ã»ᙠFᔣឋ)ᡠ◤⌕◀湿ºRÀÁḄ¯°ÂÃÄÅÆu%[ḄçèÝn=6Ìᐭ஻kHI஻—=6x(6-1)=30⌕êᜓἠḄíᦪG30í.ூRS௃U⚪ὃXuîïáðÔñyò⚪)ᐵ²nḄᐵ)±᪷Bó▭çèõöYH⚪Ḅᐵb.21ஹ(1)50
(2)÷H᪆~(3)510ூᑖ᪆௃(Dø¿ºùÅkIᑮDú5ᔴ)ᓰüXáᦪḄ10%,üXáᔴᦪ~(2)᪷BáᦪBᓰáᦪḄ30%ªÅÆᓽIH~(3)ᐜ10000ᔴkḄýᦈᚗ
ᙠᚗ
ᨬḄᔴᦪᓽ.ூ௃(1)5+10%=50ᔴ
ᦑ᪵ḄᚗḄᔴᦪ50ᔴ(2)!ᚗḄᦪ"#50x30%=15ᔴ9ᦑ$ᨴ&ᦈḄᑴᡂ510ᔴ.ூ*+௃,⚪.⌕ὃ1234Ḅ5ᐵᑁ8
9:;<=>?=Ḅ3@ABᩩD234ḄEFGH,⚪ḄᐵI.22ஹ(1)8ஹ7ஹ18
(2)a+c-2=bூᑖ᪆௃(1)N⌕Oᔜ?4DḄ⚔*ᦪஹRᦪஹ☢ᦪᦪTUVAWXᫀ

13(2)÷øùúû_
-“⚔2ᦪஹýᦪஹ☢ᦪ”
◚Ḅᦪᐵᵨ⊤ᩭᓽ.ூ௃(D!"Ḅ⚔$ᦪ%8'(!"Ḅ☢ᦪ%7'+!"Ḅ!ᦪ%18'ᦑ.ᫀ%8ஹ7ஹ18'(2)3456789:“⚔$ᦪஹ!ᦪஹ☢ᦪ”
◚Ḅᦪᐵa+c-2=b.ூ$=௃>⚪ὃAḄBC$DEFGHIJᓫL☢M⚔$ᦪஹ☢ᦪஹN!ᦪᱯᨵḄQR.23ஹ(1)>'(2)a-bூᑖ᪆௃(1)XᦪYZ«>(),]0_|Q|Vᔣ,(2)ᐜᑨcb-aḄghi᪷klmnḄឋpqrᓄJᓽூ௃:(1)᪷kᦪYa>0,bb,a-b>0,ᦑ.ᫀ%>;(2)XᦪYZa>0,*0_|<},ᑣ᪷klmnḄ~ᑣ\b-a\=a-b,ᦑ.ᫀ%a-4ூ$=௃>⚪ὃAᵨᦪY⊤ᨵᳮᦪlmnᓄJ᪷k$ᙠᦪYZḄᑨca>Q>bD⚪Ḅᐵ.24ஹᵬḄᦔ᳛XᵬḄ
+Ḅᦔ᳛XḄ
=1'ᒕḄᑖᵬஹᔠxᡂ'x4+d+[]x=l'ᒕḄᑖᵬஹᔠ6ᡂூᑖ᪆௃᪷k⚪ᐵ%ᵬḄᦔ᳛XᵬḄ
+Ḅᦔ᳛XḄ
=1,¡ᒕḄᑖᵬஹᔠxᡂ᪷kᐵᑡ£¤ᯠ¦£¤ᑏ.ᫀᓽ.ூ௃¨ᐵ%ᵬḄᦔ᳛XᵬḄ
+Ḅᦔ᳛XḄ
=1,¡ᒕḄᑖᵬஹᔠxᡂ᪷k⚪ᑡ£¤%x=6,.ᒕḄᑖᵬஹᔠ6ᡂ.ᦑ.ᫀ%ᵬḄᦔ᳛©ᵬḄ
+Ḅᦔ᳛XḄ
=1'ᒕḄᑖᵬஹᔠxᡂ']x4+(L+«ே=1'ᒕḄᑖᵬஹᔠ6ᡂ.ூ$=௃

14,⚪ὃTᐗT[\]Ḅ^ᵨ
ᳮabᦔ᳛ஹabefgab"Ḅᐵh
iᑮk"ᐵhᑡ\]GXḄᐵI.