问题
解答题
脱式计算.(能简算的要简算)
0.8×(3.2-2.3÷2.3)
3.65×4.7-36.5×0.47.
答案
(1)0.8×(3.2-2.3÷2.3),
=0.8×(3.2-1),
=0.8×2.2,
=1.76;
(2)3.65×4.7-36.5×0.47,
=36.5×0.47-36.5×0.47,
=0.
脱式计算.(能简算的要简算)
0.8×(3.2-2.3÷2.3)
3.65×4.7-36.5×0.47.
(1)0.8×(3.2-2.3÷2.3),
=0.8×(3.2-1),
=0.8×2.2,
=1.76;
(2)3.65×4.7-36.5×0.47,
=36.5×0.47-36.5×0.47,
=0.