Question

38.3x7.6+11x9.25+427x0.24的简便算法是什么啊？哪位好心人帮帮我吧。

小学6年级的数学题，不算难，可就是怎么也找不到简便算法。我相信一定有高人来指点一二啊。

Answer 1

原式=383*0.76+11*9.25+427*0.24
=383*（0.76+0.24）+44*0.24+11*9.25
=383+11*（0.96+9.25）
=383+11*10.21
=383+110+2.31
=495.31

Answer 2

38.3x7.6+11x9.25+427x0.24
=38.3x7.6+11x9.25+(383+44)x0.24
=383x0.76+11x9.25+383x0.24+44x0.24
=383x(0.76+0.24)+11x9.25+11x4x0.24
=383x1+11x(9.25+4x0.24)
=383+11x(9.25+0.96)
=383+(10+1)x10.21
=383+10x10.21+1x10.21
=383+102.1+10.21
=495.31