题目内容
【题目】脱式计算。(能简算的要简算)
(1)(111+999)÷[56×(
-
)]
(2)7.24×
+0.6×2.41-0.65×60%
(3)
×[(10-
)÷
]÷ ![]()
(4)(
+
)×17×14
【答案】(1)370
(2)5.4
(3)![]()
(4)![]()
【解析】
(1)(111+999)÷[56×(
-
)]
=(111+999)÷[56×
]
=(111+999)÷3
=1110÷3
=370
(2)7.24×
+0.6×2.41-0.65×60%
=7.24×0.6+0.6×2.41-0.65×0.6
=(7.24+2.41-0.65)×0.6
=9×0.6
=5.4
(3)
×[(10-
)÷
]÷![]()
=
×[
÷
]÷![]()
=
×1÷![]()
=![]()
(4)(
+
)×17×14
=
×17×14+
×17×14
=
+![]()
=![]()
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