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125 82简便运算

125*82=125*(80+2)=125*80+125*2=10000+250=102508*125=1000这个是简算里边的要点.

125*82=125*80+125*2=10000+250=10250

简便计算82125=80x125+2x125=10000+250=10250

解:125*(82-2)等于( 10000 ) ∵已知需求出125*(82-2)等于多少 ∴125 * (82 - 2) = 125 * 80 = 10000 答:125*(82-2)等于10000

125*34*82=(125*80+125*2)*34=(10000+250)*34=340000+34000/4=340000+8500=348500

=82*8+125*8=(80+2)*8+1000=80*8+2*8+1000=640+16+1000=1656

7.2*9.9/0.25=7.2*(10-0.1)/0.25=(72-0.72)/0.25=285.12

125x82+125x2=125x(82+2)=125x84=125x80+125x4=10000+500=10500

125*82=125*(80+2)=125*80+125*2=10000+250=10250

125*82减250 =125x2x41-250 =250x41-250 =250x(41-1) =250x40 =10000

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