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计算下面各题 能简算的要简算.(1)512÷7÷57(2)813×17+613÷7(3)4×
问题详情
计算下面各题,能简算的要简算.
(1)
(2)
(3)4×
(4)(0.8-
(5)
(6)(
参考答案
(1)512÷7÷57,
=512÷(7×57),
=512÷5,
=112;
(2)813×17+613÷7,
=(813+613)×17,
=1413×17,
=213;
(3)4×512÷59,
=4×(512×95),
=4×34,
=4;
(4)(0.8-25)÷(29+13),
=0.4÷59,
=1825;
(5)23÷(23-16),
=23÷12,
=113;
(6)(712+1118)÷536,
=712×365+1118×365,
=215+225,
=835.
考点: