问题 解答题
脱式计算,能简算的要简算.
(15.6+9.44)×0.9
1.5×1.3×4 2.7+3.71+2.29+7.3.
答案

(1)(15.6+9.44)×0.9,

=25.04×0.9,

=22.536;

(2)1.5×1.3×4,

=1.3×(1.5×4),

=1.3×6,

=7.8;

(3)2.7+3.71+2.29+7.3,

=(2.7+7.3)+(3.71+2.29),

=10+6,

=16.

单项选择题
单项选择题