作业帮1994.4×3.6+2006.9×6.4简算
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/26 18:48:32
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1994.4×3.6+2006.9×6.4简算
1994.4×3.6+2006.9×6.4简算
1994.4×3.6+2006.9×6.4简算
=1994.4X(3.6+6.4)+(2006.9-1994.4)X6.4
=1994.4X10+12.5X6.4
=19944+12.5X8X0.8
=19944+100X0.8
=19944+80
=20024
=1994.4*3.6+1994.4*6.4+12.5*6.4
=1994.4*10+12.5*6.4=19944+12.5*8*0.8=19944+100*0.8=19944+80=20024
(1995-0.6)*3.6+(2007-0.1)*6.4
=1994.4X3.6+(1994.4+12.5)X6.4
=1994.4X(3.6+6.4)+12.5X6.4
=1994.4X10+12.5X8X0.8
=19944+80
=20024