问题
解答题
(4.5×2.8×8.5)÷(8.1×5.1×3.5).
答案
(4.5×2.8×8.5)÷(8.1×5.1×3.5),
=(5×0.9×0.4×7×17×0.5)÷(0.9×9×0.3×17×0.5×7)
=
,5×0.9×0.4×7×17×0.5 0.9×9×0.3×17×0.5×7
=
,2 2.7
=
.20 27
(4.5×2.8×8.5)÷(8.1×5.1×3.5).
(4.5×2.8×8.5)÷(8.1×5.1×3.5),
=(5×0.9×0.4×7×17×0.5)÷(0.9×9×0.3×17×0.5×7)
=
,5×0.9×0.4×7×17×0.5 0.9×9×0.3×17×0.5×7
=
,2 2.7
=
.20 27