问题
解答题
计算下列各题(能简算的要简算):
4.32÷2.4×1.7;
16.2×4.5+3.8×4.5;
9.05-3.86-3.14;
7.28+0.72÷0.9.
答案
(1)4.32÷2.4×1.7,
=1.8×1.7,
=3.06;
(2)16.2×4.5+3.8×4.5,
=(16.2+3.8)×4.5,
=20×4.5,
=90;
(3)9.05-3.86-3.14,
=9.05-(3.86+3.14),
=9.05-7,
=2.05;
(4)7.28+0.72÷0.9,
=7.28+0.8,
=8.08.