问题 解答题
计算,能简算的要简算
7.26+3.2÷2.514.6-4.6×2.80.8+0.8+…+0.8+15×0.215个0.8
14.5×1024.05÷0.5-1.149.99×99+9.99.
答案

(1)7.26+3.2÷2.5,

=7.26+1.28,

=8.54;

(2)14.6-4.6×2.8,

=14.6-12.88,

=1.72;

(3)0.8+0.8+…+0.8+15×0.2(15个0.8),

=0.8×15+3,

=0.8×5×3+3,

=12+3,

=15;

(4)14.5×102,

=14.5×(100+2),

=14.5×100+29,

=1450+29,

=1479;

(5)4.05÷0.5-1.14,

=8.1-1.14,

=6.96;

(6)9.99×99+9.99,

=9.99×(99+1),

=99.9×100,

=9990.

单项选择题
单项选择题 A1/A2型题