计算.(能简算的要简算)876+1529+124=10-(9.62-2.8)=42.8×4×25=98÷(115÷27)=15÷3+45×13=38÷[(15+14)×38]=-数学

题目简介

计算.(能简算的要简算)876+1529+124=10-(9.62-2.8)=42.8×4×25=98÷(115÷27)=15÷3+45×13=38÷[(15+14)×38]=-数学

题目详情

计算.(能简算的要简算)
876+1529+124=
10-(9.62-2.8)=
42.8×4×25=
98÷(
1
15
÷
2
7
)=
1
5
÷3+
4
5
×
1
3
=
3
8
÷[(
1
5
+
1
4
)×
3
8
]=
题型:解答题难度:中档来源:不详

答案

(1)876+1529+124
=(876+124)+1529,
=1000+1529,
=2529;
(2)10-(9.62-2.8)
=10-6.82,
=3.18;
(3)42.8×4×25
=42.8×(4×25),
=42.8×100,
=4280;
(4)98÷( class="stub"1
15
÷class="stub"2
7

=98×class="stub"2
7
÷class="stub"1
15

=28×15,
=420;
(5)class="stub"1
5
÷
3+class="stub"4
5
×class="stub"1
3

=class="stub"1
5
×class="stub"1
3
+class="stub"4
5
×class="stub"1
3

=(class="stub"1
5
+class="stub"4
5
)×class="stub"1
3

=1×class="stub"1
3

=class="stub"1
3

(6)class="stub"3
8
÷[(class="stub"1
5
+class="stub"1
4
)×class="stub"3
8
]
=class="stub"3
8
÷class="stub"3
8
÷(class="stub"1
5
+class="stub"1
4
),
=1÷class="stub"9
20

=class="stub"20
9

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