问题
解答题
28×6.5-9.3
0.2×8.2×50
0.68×99+0.68
25×32×1.25
2.4+7.6×4.3
(4.85+1.15)×0.37.
答案
(1)28×6.5-9.3,
=182-9.3,
=172.7;
(2)0.2×8.2×50,
=(0.2×50)×8.2,
=10×8.2,
=82;
(3)0.68×99+0.68,
=0.68×(99+1),
=0.68×100,
=68;
(4)25×32×1.25,
=25×4×8×1.25,
=(25×4)×(8×1.25),
=100×10,
=1000;
(5)2.4+7.6×4.3,
=2.4+32.68,
=35.08;
(6)(4.85+1.15)×0.37,
=6×0.37,
=2.22.