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脱式计算.(能简算的要简算)12.3+5.6×1.4÷0.32(56+14)÷(23-59)90×(745+1115-59)3.6×[2÷(45-0.6)]18.5×2.71+7.29×(30-11.5)
题目详情
脱式计算.(能简算的要简算)
12.3+5.6×1.4÷0.32
(
+
)÷(
-
)
90×(
+
-
)
3.6×[2÷(
-0.6)]
18.5×2.71+7.29×(30-11.5)
12.3+5.6×1.4÷0.32
(
5 |
6 |
1 |
4 |
2 |
3 |
5 |
9 |
90×(
7 |
45 |
11 |
15 |
5 |
9 |
3.6×[2÷(
4 |
5 |
18.5×2.71+7.29×(30-11.5)
▼优质解答
答案和解析
(1)12.3+5.6×1.4÷0.32
=12.3+7.84÷0.32
=12.3+24.5
=36.8;
(2)(
+
)÷(
-
)
=
÷
=
;
(3)90×(
+
-
)
=90×
+90×
-90×
=14+66-50
=80-50
=30;
(4)3.6×[2÷(
-0.6)]
=3.6×[2÷0.2]
=3.6×10
=36;
(5)18.5×2.71+7.29×(30-11.5)
=18.5×2.71+7.29×18.5
=18.5×(2.71+7.29)
=18.5×10
=185.
=12.3+7.84÷0.32
=12.3+24.5
=36.8;
(2)(
5 |
6 |
1 |
4 |
2 |
3 |
5 |
9 |
=
13 |
12 |
1 |
9 |
=
39 |
4 |
(3)90×(
7 |
45 |
11 |
15 |
5 |
9 |
=90×
7 |
45 |
11 |
15 |
5 |
9 |
=14+66-50
=80-50
=30;
(4)3.6×[2÷(
4 |
5 |
=3.6×[2÷0.2]
=3.6×10
=36;
(5)18.5×2.71+7.29×(30-11.5)
=18.5×2.71+7.29×18.5
=18.5×(2.71+7.29)
=18.5×10
=185.
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