问题 解答题
选择合适的方法计算
2.47×6.5+7.53×6.5
66.96÷72-0.8776.1×17-76.1×7
65.7×0.35+0.1529.6÷7.4×1.20.65×101.
答案

(1)2.47×6.5+7.53×6.5,

=(2.47+7.53)×6.5,

=10×6.5,

=65;

(2)66.96÷72-0.87,

=0.93-0.87,

=0.06;

(3)76.1×17-76.1×7

=76.1×(17-7),

=76.1×10,

=761;

(4)65.7×0.35+0.15,

=22.995+0.15,

=23.145;

(5)29.6÷7.4×1.2

=4×1.2,

=4.8;

(6)0.65×101

=0.65×100+0.65,

=65+0.65,

=65.65.

选择题
单项选择题