如题所述
解:1.25x10.8-1.25x1.8-1.25等于( 10 )
∵已知需求出1.25x10.8-1.25x1.8-1.25等于多少
X × Y - X × Z = X × (Y - Z )
∴1.25 x 10.8 - 1.25 x 1.8 - 1.25
= 1.25 × (10.8 - 1.8 - 1)
= (1×100+25)/100 × (9 - 1)
= 125/100 × 8
= 5/4 × 8
= 10
答:1.25x10.8-1.25x1.8-1.25等于10
∵已知需求出1.25x10.8-1.25x1.8-1.25等于多少
X × Y - X × Z = X × (Y - Z )
∴1.25 x 10.8 - 1.25 x 1.8 - 1.25
= 1.25 × (10.8 - 1.8 - 1)
= (1×100+25)/100 × (9 - 1)
= 125/100 × 8
= 5/4 × 8
= 10
答:1.25x10.8-1.25x1.8-1.25等于10
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