题目内容

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.
(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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