《跟着课本学奥数：人教版数学二年级下册A版.pdf》由会员分享，可在线阅读，更多相关《跟着课本学奥数：人教版数学二年级下册A版.pdf（27页珍藏版）》请在taowenge.com淘文阁网|工程机械CAD图纸|机械工程制图|CAD装配图下载|SolidWorks_CaTia_CAD_UG_PROE_设计图分享下载上搜索。
1、!#$%&(%)!*+,+-./0%1234!5-.6728!9:;?#/AB67$CDEFGHI*!JKL*MNO/APQB67%#/AB67$RS#TUVAWE&X(!YZ R_!(ab_aa%CDcEdefghijkl(m!nok%pqrsU_tuvw!xyz!|?d8?i!R?/?Z?Z?8_?X?!?B?/Atu_?;?!?PQB67_Z?8?!?;?!?!?B67;d?i!?“_?!IR?%fi_flt?%#/AB67$R%&gh%-a!Ra-!R?#-!MN”/AB67_%1%_?S?&!#$!/0k%Z?!?Y(?X?:!34?!?%&!?(“_?!?5?_?:!?!?%()*
2、!?3?(X_1?!?!?%+,-.!n?/0k%!%?Z?8?_67?;!?-)*+./$!#?;?!?%/012!?#)3?8?HZ_67?1?!L*?_?/Atu!?!M?%#/AB67$(+j?D_aa%(_?VS?&3456!?ar%_X:!?,?j/A?_1?!?P1!?B!1#_$%/012!?,?&671?!7(HZ!?)*!+,-.!?/%101!?MN?;6723%CDE_?X1?4+?-67k%56_78)9?:_!;5P?!OA(BC!?PDEFCG?$H?tu_IJ(KLXMN%?vOP!FGQRS?%T(%)?U%1!%1?m*!#$%&()*+,)-.!/!#$%
3、!&()#$%_P=!a#&%_P=!%_P=!b&(%_P=!c()%_P=!d)#*%!+,-.!$#$%_P=!e#&%fgh!a#%fgh!#$(%ij!a#)%ij!#/%!+,-.!*$%ij!b&%k#&.lmjnopq!a&%k#&.lmjnopq!(%k#&.lmjnopq!b)%k#&.lmjnopq!c#0%!+,-.!/$%k#&.lmjnopq!d&0$!#&%k#&.lmjnopq!e$%k#&.lmjnopq!r%(%k#&.lmjnopq!s*!)%k#&.lmjnopq!t*#1%!23445*&$%uvijlwxyz*&%_|k=*(%yA?*)(%?=&#
4、)%?P=%!789:;&$%?&%f?!a&%f?y?!$#(%?P=$*)%?$#%!?,ABCD!$)*$%?v&l?)*&%?v&l?)$%?v&l8;?)(%?v&l?#!#)%j_&+=#!*#E%!?,ABCD!*#!$%?v?Kl&l?#!$&%?v&l8;?#!)%&#(%w w?&lj#&)%“#BK#(#E$%!F9GF#?,BH.IJ.#)$%fiy?fi!a#)&%fiy?fi!#%?vlj?j!a#*(%?vlj?j!#()%?vlj?j!b#)&0$!#E*%!?,BH.IJ.#$%?vlj?j!c#&%?vlj?j!d#%?vlj?j!e#&(%?vlj?
5、j!r#()%?vlj?j!s#)#E/%!KL#LM9NM#*#$%K?#*#&%fl?!a#*%fl?!#*%(%?!a#&*)%?!#&$#E0%!OPQ#&%$%!a#&%&%!#$!%!b#$(%!c#$)%?kuj_=#$)#E1%!RST#(#$%z!a#(#&%z!#(%z!b#(&(%z!c#()%?kA_=#()UVWX#%#*!#$%&()*+,)-.!/书书书!#$%&(!#$!%!#$!#$%&()*+,-./01234%(567#!%&!89!8:!8;!?A 8B(A?5CDE(FGH?!8BIH?A#!#$!89!8:!8;#=$%?K8B(?5LMNOPQRS
6、T USV$%#&$?%!W&8B&?A!()*!XX(YZ(ZCXXH$%Y!1J_YZ#8!8:G8a=bcT)defg DE1Jhijkl8mn%$dg!opqrIHdg#$stc.1uvw IHzvw#!#!$%&!+,-.?8663#()=?3C?3H)=!7?3!?3?_=#!#$!?F=5?3!?3(?LMyF=5?!?3(=5(?S%Q?3=5T!?3=5V$#()$)%#$&)$=%(?3=5V#()$&)#$&($=%!W&?3$&)=?3$&(=!/012%?)?1*?6E?$?(G?(J$)=?(C?(I!=!7?(G?(?IH=#&?1?%$&?%$?!?1?%?_?
7、%?%(?1I#a1d“g fi!fl?(?5GV*#!?a(V?#!#$%&()*+,)-.!/#!#$!&!#$!O%”d5,-&O5+O5,?O5,?-O5 O5,O5+?R/01234%(?7#!%&!1?.?%(?1xP#?xP(G?1x?I!r(?C._#!#$!#MKr(?C._ EyS(5,-./&.(5+r(5,r(?C.(5./1!%(+%($#$#%,#$%!?(?#?a(8mnV)r(?C.(5*QVP(5 LMy1?Q?/W!/?!#$#$%!W&r(?C.!()*!?.&%?T$?T%#?!?(?5C.VITqVHT#IT+HT_?#?)?#)?(?)?1?1)?%
8、?(?)!%?(?)?_?#!#!$%&!#!$st?:?!)?q12?w%yT%!?w r(?wqC?:?I$)?!.?wIH?#!+,-.1O#%O5!O5!?5(GV*%O5C?I$(!opO5VIH#!#$!#$%?E O5!O5!?(GV*%?)O5,?-O5*RS*%#!QVO5G?(G!?)O5C?I$(*RSK?O5!*%#!$!$(%#%)!W&O5V%)!/012%?!?=?G?(?!?!?=?G?!?C?8&!?V_#&1?!z?1|?%!z!?G?IHz#!8?J&(z?I(?|qr$(zGz!8?.?IHz#$!#$%&()*+,)-.!/$!#$!#$!34%(56
9、7#/0!#$!%&!$?8mn%?1&(|5 88%?!)?|(5 D%?_?#!#$!*#+,-?.&/-.R(|5 88%?0QV1288J?8mn!3?1J$?8mn US88|2q$#*$?%8mn!|2(5(4 58856V?$(?7$#$($?%!W&|(5 88%?$(?!()*!$)?8mn%?1&P89:(|5;?)?!)?&?125BBV?*?%?BB(|2!&?8mn%?|2(!?8mn!?18&1J_?8mn#!+,-.1%(?AB C%2ABD=EF 8aGHE?1?AB?IJb1?=KDLM!op.NHIH=DQA#!#$!RSMO8aGHE?1?AB?IJb1?
10、=KDLM 0QVP?=LQR?SB TM)?1?ABUS(4?ABVW=!XS?)*y?YD=QA y#?YSB-.)&#/-.ZQRS!WT!W&.NH?=DQA!/012%8mn%?1&_a%b5?ccV?$(?%d5?eeV?$)?%?cc2(QVee!1J_?8mnP_a#&fg8h%(?63%?%&?63Lj$!%&I?#8mnEk?%!?8mn D(flJ0!?8mn!1J_?8mn#&!#$%&()*+,)-.!/%!#$!(!#$!l5y#3?)*G1?7#h?!25y#3?)*G7#mn G?oMp?)*G7#?q?!p)*!p7#(rs?tuE?1vw5y#(qxG5,-
11、!%&!$%p)*&1d?y-(?8a8T%!?!z?qM_x?8#$%p7#&1?|?!&C1?!&!#!#$%/?RS&)*?d?y-(?8T%!?Rqr(%!#$?%MKqM_x8 QVWr(x8_?RSpS?m?()*&!r($)L?!8?IHL#$%?(L5V8?(%?H%L!8?1JIHL#!#!$%&!$p7#O?E?U?(5y#&$%?86?#?=J63$%(=C%?$%=63!%=?$#%=63!#=!#$%?T1u?1x?T%(?x?T%&?T#&?!#!+,-.6?.ga“g$%d C?y-H)d?y-V?g(1!#!#$!/?#MK(RSV&$%?gIHd#$%$)#%
12、($d%(&%#!($d%!$%?g1JIHd#$%$%$)%$%$)%&%#%$d%!/012%1?F5m?/%(?E?i?8mn q?%?!?1I_?#1H_?#&?.?(?C?I$%|.?)!?I#I_#8G8:?c?1?rsd q?n 8?&8:H%?“=?.qVmnc1d!?rsd)?(?5C|?(#?I&?MK?_?#EVW,?)(#?VIH?V)&#%!$?%(N?I(&?.%!$&#%*$?%?V)&#$&#%*$?%!?#%M,?fl N?!()*!8.?!%!&!#!$%&!)#6?&56(=5C?(&?H%!6?56IH#$6?&”(=5C?(&?I#!6?”!?JIH#
13、!+,-.1L!z 1L8(OH$(z?V1L(&?!1L8IHz#!#$!)?P1?5OHIHG1?5?I 0QVP?5QC1?5IIH!8(fOH$(z?V(&?0QVP8(V(&?I$(z?V!&$(#($z%!W&1L8#(z!/012%G#BmnP?IH?#&?8?)?N.!?V8?(#?!?IH#?=5OH*=QV?(%?!?IH#?1JIH=#!*!#$%&()*+,)-.!/!)#$*+,-./!#$!*!#$!?/25y#C+?(?“1|(q?|(11?Q?I?Q?!?127#DMy?!%&!aa!Y-aa(-5V?(1?(-5V?(1!?_Y-#!#$!/W#M?y?)1*
14、(,-?!/)aa(-5V?(1*RS?(-5V)Y(?)?(-5V?(1*RS?(-5V$Y!&%#)$Y%)&%#$Y%!W&?$Y-!()*!Y#)?V9(?5(1!YG91J_)?#?h?6 Vfgh=5(1 fgh(=5V?h=5(1!?hIH?6#!(#!)*+,!$?*YZ VXXZ5(1!?CXXHIHYZ#!+,-.812-C%(YI C!(YH!)?&Y1h.5 r!Y()?#Y1h.5 r$Y!8IHY-#!#$!2-(Y5?%(K!(&?&Y1hJ&h 56V%*Y“?)*m?USN?#!Y 0?)*US81J#!Y-!W&8#!Y-!/012%1?$!?8?1?1JT
15、IH?#&12?C$(?I C%(?H?5GIH?#Y?,?1?S|j#(?1D?T*!?1?1G?L?IH#!#$%&()*+,)-.!/#+,-!%!#$!?12?_+K1?5?_?1?5Qy?!%&!2?.G?Y(+?L?#!#!#$!.$V?$%?!V$%!#$?%?12?_ K1VIH y?!.%V?$%?#?1 RS$%#!$%?K1?5?_?1?5 0y?!(#!)*+,!#!()*!8.S$?(5$?(?%!$%?!L?!L?!L1 RS?!?V!$!,!$%!$!,!?Y?!?!V!?(!$!,!?Y?!?_?_!?QV?F5?_ KV_!?)*(#$EbRSy?.?Y!%&
16、!8.!#$!/#,$%!?Y&#?!V$%!$%0#,!+,&$%?S#?!(?Y&?$%?#?!()*!8.?-S!&!#$%&()*+,)-.!/$%!$!,!?Y$!%?$!%?GV$!%($%!$!,!?Y?$!%?$!%$!%?$!%!#?,(?!,!-!+!/!0&(!,!-!+!/!0&(!$?$?(?!$%&$#)$%$%($!*$!+,-.!./5!#$!h#$(./QV02?5Lfl?2123(q?US?QV%&#q?QV?QRSyfl45?T!(&#&$!%#$)45?67 US8?V!?1|1?(&$!%?6 US8?QV&!(#!)*+,!/012%+,$,%op+
17、&$#$!%+%$#$!%+$+$+#$!%$#$!%!&-(-(-(,%)-(-(,%&(!op,$!%(,$!%&(!-(-(-(-(,#%-(-(-(-(,%!&(!op,$!%(,$!%&(!(!#$%&()*+,)-.!/%./!%!#$!T?(+9 EQ?Z?kyfl45?)?1?!m?(fl45K(4QRSI?_:;x/_*=#.?1?!%&!%(?2U%(?2!?&US%(?2?#RSy?!/&%(0&,!$?%!W&%(?2?OP&MO!?O!()*!$)?O#O_?O#(?O&O_?O#$%!?O!O_?O#!(#!)*+,!)!+,-.)?)%&#*%op)$!%*!#$!C?(8 RSy=(?0RS?&?5?Sm?(5(q?L?opQRSP?58 op?508 A0?!US)?)0&,*0 op)*!/012%C)G*(8$)G*bm?(%-?$!%?)*!)*+),*!$%)&!#*&)$!%*$%)&!#*&!)$!%*$#%)%!#*&$)$!%*!#$%&()*+,)-.!/&./!&!#$!ky?B?12l(”#?5!?5,-?12S#!%&!?5GbV?5VIH#!#$!fl?(,-?5,/?5 US?#?QV&#!W&?5V#!()*!)?S%(VIH#?$%?#VIH#$?!?GVIH#!(#!)*+,!