问题 解答题
脱式计算,能简算的要简算
240÷15÷4129+318+71   304+27825×(17×8)700-300÷25
(614+346)÷4894×(205-188)25×32×125420÷35.
答案

(1)240÷15÷4,

=240÷(15×4),

=240÷60,

=4;

(2)129+318+71,

=(129+71)+318,

=200+318,

=518;

(3)304+278,

=(300+4)+(300-22),

=300+300-(22-4),

=600-18,

=582;

(4)25×(17×8),

=25×8×17,

=(25×4)×(2×17),

=100×34,

=3400;

(5)(614+346)÷48,

=960÷48,

=20;

(6)94×(205-188),

=94×17,

=1598;

(7)25×32×125,

=25×4×8×125,

=(25×4)×(8×125),

=100×1000,

=100000;

(8)420÷35,

=420÷(7×5),

=420÷7÷5,

=60÷5,

=12.

选择题
单项选择题