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初中数学 努尔江


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?=?40+56??

?(?????????) ?96??

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?(?????????) ?96??

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??40+56= 56+40??
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?)=?) 35(+65??
?)=?300+600??

??(+35?? ??65??
?( )?(+?? ??600??

??300??

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??88+104+96?? ??=192 +96?? ??=288??

??88+104+96??

??200??
??288??

???????? ????? ??????????? ?????????? ???????????????:?? ?(?)88+104(+96=88+)104+96??

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?=?)69+172(+28 69+?? ?(?)172+28?? ??155+)145+207( )155+?? ??145(+207?? ?=?

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?) ?56??

??36+45= 45+36?? ??+72(+?? ?(?28?? ??28 =56+) +?? ??72??
?? -2?????????????? ??????????

??282+41+159?? ?( ?=282+)41+159?? ??=282+200?? ??=482??

??60+255+40?? ??=60+40+255?? ??=100+255?? ??=355??

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??-37?????-5 :?????? ?-1-2-3??????????


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