问题 解答题
69×580×549×13128×9
206×815×5×5044×4+6(710+230)×8
(330+230)÷8(540-370)×6     33×8÷6        745+625÷5.
答案

(1)69×5=345

69
×5

.
345

(2)80×54=432

54
×80

.
4320

(3)9×13=117

13
×9

.
117

(4)128×9=1152

128
×9

.
1152

(5)206×8=1648

206
×8

.
1648

(6)15×5×50

=75×50

=3750;

(7)44×4+6

=176+6

=182;

(8)(710+230)×8

=940×8

=7520;

(9)(330+230)÷8

=560÷8

=70;

(10)(540-370)×6

=170×6

=1020;

(11)33×8÷6

=264÷6

=44;

(12)745+625÷5

=745+125

=870.

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