问题 解答题
脱式计算(能简算的要简算)
6.27×7.1+6.27×2.93.208÷1.6-0.936
19.6÷0.125÷80.75+1.25×0.2+0.8.
答案

(1)6.27×7.1+6.27×2.9,

=6.27×(7.1+2.9),

=6.27×10,

=62.7;

(2)3.208÷1.6-0.936,

=2.005-0.936,

=1.069;

(3)19.6÷0.125÷8,

=19.6÷(0.125×8),

=19.6÷1,

=19.6;

(4)0.75+1.25×0.2+0.8,

=0.75+0.25+0.8,

=1+0.8,

=1.8.

单项选择题
单项选择题