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脱式计算.5400-2940÷28×27(45+34)÷(6281×910)7.8×1.3÷7.8×1213.
题目详情
脱式计算.
5400-2940÷28×27
(
+
)÷(
×
)
7.8×1.3÷7.8×
.
5400-2940÷28×27
(
4 |
5 |
3 |
4 |
62 |
81 |
9 |
10 |
7.8×1.3÷7.8×
12 |
13 |
▼优质解答
答案和解析
(1)5400-2940÷28×27
=5400-105×27
=5400-2835
=2565
(2)(
+
)÷(
×
)
=
÷
=
(3)7.8×1.3÷7.8×
=(7.8÷7.8)×(1.3×
)
=1×1.2
=1.2
=5400-105×27
=5400-2835
=2565
(2)(
4 |
5 |
3 |
4 |
62 |
81 |
9 |
10 |
=
31 |
20 |
31 |
45 |
=
9 |
4 |
(3)7.8×1.3÷7.8×
12 |
13 |
=(7.8÷7.8)×(1.3×
12 |
13 |
=1×1.2
=1.2
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