问题
解答题
用简便方法计算.
3.7×4.5-4.4×3.7
0.25×0.25×4
3.84-1.9+0.16-1.1.
答案
(1)3.7×4.5-4.4×3.7
=3.7×(4.5-4.4)
=3.7×0.1
=0.37;
(2)0.25×0.25×4
=0.25×(0.25×4)
=0.25×1
=0.25;
(3)3.84-1.9+0.16-1.1
=3.84+0.16-(1.9+1.1)
=4-3
=1.