问题 解答题

31.7÷0.63(保留2位小数)

2.4×1.5+3.6÷1.5

0.32×0.25+0.08÷4

(9.6+1.48÷3.7)÷8

5.8÷[4×(1.34-0.14)]

5.4÷[0.51÷(1.2-1.03)].

答案

(1)31.7÷0.63≈50.32;

(2)2.4×1.5+3.6÷1.5

=3.6+2.4,

=6;

(3)0.32×0.25+0.08÷4

=0.08+0.08÷4,

=0.08+0.02,

=0.08+0.02,

=0.1;

(4)(9.6+1.48÷3.7)÷8

=(9.6+0.4)÷8,

=10÷8,

=1.25;

(5)5.8÷[4×(1.34-0.14)]

=5.8÷[4×1.2],

=5.8÷4.8,

≈1.21;

(6)5.4÷[0.51÷(1.2-1.03)]

=5.4÷[0.51÷0.17],

=5.4÷3,

=1.8.

单项选择题 A1型题
单项选择题 A1型题