问题
解答题
用你喜欢的方法计算.
3.5×4.2+3.5×5.8;
(0.92+0.34)×9;
(8.3-0.25)×(0.6+3.7);
4×2.73×0.25.
答案
(1)3.5×4.2+3.5×5.8
=3.5×(4.2+5.8)
=3.5×10
=35;
(2)(0.92+0.34)×9
=1.26×9
=11.34;
(3)(8.3-0.25)×(0.6+3.7)
=8.05×4.3
=34.615;
(4)4×2.73×0.25
=4×0.25×2.73
=1×2.73
=2.73.