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ѼկСѧһ꼶ڶѧѧĩ⣨15

ѧУ ༶ ÷֣

һա33֣ÿ3֣

13һ6ʮ( )( )ʮ( )һ45 2λϵ7ʮλϵ5ǣ 3Сλǣ ټϣ λ 4

87 93 99 75 60 50 45

2 3 5 8 12 17 5

ʮ ʮ ʮ д д д 632ʮλǣ ʾ ʮλǣ ʾ 76921ǣ 6921ǣ 8λǣ һλǣ λһλࣨ 939ڵǣ ͣ 101д1λ6λ 2д1λ0λ 3д1ʮλ4λ

4մС˳ 112230У ӽ27 40ȣ 󣱣ȣ С һȣ4֣

) ( ) ( ) (

㡣18֣ 3629 283423 502018 82951 258596 65-45-40= 33+20-40= 78+92-80= 78+ 9- 60 =

ġѡ뽫ȷ𰸵5֣ 1У 76󣬱79С 89 58 76 78 2 λ96󣬶˫99 98 97 96 3컨89䣬ƻȺ컨ٺܶࡣƻУ 88ֻ 25ֻ 90ֻ

4ͬѧȥ꼶30ã꼶꼶һЩ꼶ֲ 32 26 30

521Ԫ25ǣ51ɣ 3Ԫ 3Ԫ5 10Ԫ 塢һ12֣ 1 ( )

2ͼδ硣

1ܰѸͼһ ͼ 2 ࣬ ٣ ͣ ͬࡣ

3 ࣨ ٣ һѧ28֣ 1

ҳ20ֻ档 ҳ8ֻ档 ҳ6ֻ档 ֻһ˼ֻ棿5֣

2(1)ľһӣѾ޺38ţ17ûޣж?6֣

(2)ıһӦ⣬ʽ㡣7֣

3·ڶȵһ14ףһ62ףڶ·?5֣

4С9꣬36꣬С?5

ѼկСѧһ꼶ڶѧѧĩ⣨16

ѧУ ༶ ÷֣

һա16֣

1.1847ĺ( )3867IJ( ) 2.ĺ54һ29һ( ) 3.2691( ) 4.3471( )8228( ) 5.55+22=91-( )=83-( )=79-( )

6.6ҪһҪ( )ᡣ

7.7 3 ( )䣬˵һࡣ 8Żȥĵ15( )

9˭Ĺɺͱ˲һѲһĻߣ

110 11 12 13 14 (2)21 22 23 24 25 (3)47 49 51 53 55 (4)27 28 29 30 31 10 ԭ ʣ 45 20 36 24 50 26 ԵĴ򡰡̡Ĵ򡰨w 5֣ 1Сÿ˯10ӡ 24һ3ʮɵ43 ( ) 3100199 ( ) 4Сλ11 ( ) 53ʮ30ͬࡣ ( ) 㣨16֣

685= 57530= 382040= 76409= 2769= 40367= 2084= 6087=

ġѡһѡ6֣

(1)ã ƴһ塣 4 8 16

6 (2) 4 5 3 2 һ 4Ķǣ

1 2 3 5

(3)ͼУ ƴ 㡣18֣

3629 203020 502010

292951 258596 65-45-40=

33+20-40= 78 +82-80= 78 + 2 - 60 =

ġдһд8֣

10 5 3 7 1ʱ10

塢һʱ̣ڻʱͷ룩9֣

8ʱ45

ˡһ⣨22֣ 16֣?绰 ?¼ ?ңس ?

42Ԫ 80Ԫ 28Ԫ 9Ԫ

¼Ԫ

С绰һ8ԪǮС˶Ǯ

ЦЦ70ԪǮ ûꡣ

2һ꼶93ȥΣͳмûϳ4֣

45ˡ

3һ˫Ь21Ԫһ˫Ьһ˫Ь9Ԫһ˫ЬԪ?һ˫Ьһ˫ЬҪöԪ?4֣ 48֣

40ˡ

50Ԫ 20 Ԫ 3Ԫ 9Ԫ

1СһѳӣۻԱһ10ԪӦһضԪ3֣ = ڴӦһأ Ԫ

2㻹ʲô⣿ռ2֣ռ3֣

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