脱式计算.300-64×84÷284-1÷3-13×8(245+0.6÷635)×2.4[118-(1320+0.35)÷117]×3.2.-数学

题目简介

脱式计算.300-64×84÷284-1÷3-13×8(245+0.6÷635)×2.4[118-(1320+0.35)÷117]×3.2.-数学

题目详情

脱式计算.
300-64×84÷28
4-1÷3-
1
3
×8
(2
4
5
+0.6÷
6
35
)×2.4
[1
1
8
-(
13
20
+0.35)÷1
1
7
]×3.2.
题型:解答题难度:中档来源:不详

答案

(1)300-64×84÷28,
=300-5276÷28,
=300-192,
=108;

(2)4-1÷3-class="stub"1
3
×8,
=4-class="stub"1
3
-class="stub"8
3

=4-(class="stub"1
3
+class="stub"8
3
),
=4-3,
=1;

(3)(2class="stub"4
5
+0.6÷class="stub"6
35
)×2.4,
=(2class="stub"4
5
+class="stub"7
2
)×2.4,
=6.3×2.4,
=15.12;

(4)[1class="stub"1
8
-(class="stub"13
20
+0.35)÷1class="stub"1
7
]×3.2,
=[1class="stub"1
8
-1÷1class="stub"1
7
]×3.2,
=[1class="stub"1
8
-class="stub"7
8
]×3.2,
=class="stub"2
8
×3.2,
=0.8.

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