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1、在括号里填上适当的数、在括号里填上适当的数13 - 9 10111 - 9 1018 - 9 1016 - 9 101128196173419 + 4 = 13 9 =1349 + 5 = 1414 9 =522、在括号里填上适当的数、在括号里填上适当的数( )+ 9 = 129 + ( ) = 1212 9 =( ) ( )+ 9 = 139 + ( ) = 1313 9 =( ) 5+ ( ) =149 + ( ) = 14( ) 9 = 5 15 - 9 = ( )( ) + 9 = 156+ ( ) =15 3334449514669311 9 = 212 9 = 313 9 = 414 9 = 515 9 = 616 9 = 717 9 = 818 9 = 9411 9 = 212 9 = 313 9 = 414 9 = 515 9 = 616 9 = 717 9 = 818 9 = 9563718599102111012713414815616119129139149159169179189=2=4=6=8=3=5=7=9175、11 9 =14 9 =18 10 =15 5 =12 9 =17 4 =17 9 =19 9 =16 2 =18个人观点供参考,欢迎讨论