递等式计算8.38×234?2.75×71950?27.5%4875÷75-253×32÷128[254?56×(2512?11960+2.275)]÷65%3.3÷(8
递等式计算8.38×234?2.75×71950?27.5%4875÷75-253×32÷128[254?56×(2512?11960+2.275)]÷65%3.3÷(8...
递等式计算8.38×234?2.75×71950?27.5%4875÷75-253×32÷128[254?56×(2512?11960+2.275)]÷65%3.3÷(8.98?11.16×23+50%).
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(1)8.38×2
-2.75×7
-27.5%,
=(8.38-7.38)×2.75-27.5%,
=2.75-27.5%,
=2.475;
(2)4875÷75-253×32÷128,
=65-8096÷128,
=65-63.25,
=1.75;
(3)[254-56×(2
-1
+2.275)]÷65%,
=[254-56×(1.1+2.275)]÷65%,
=[254-56×3.375]÷65%,
=[254-189]÷65%,
=65÷65%,
=100;
(4)3.3÷(8.98-11.16×
+50%),
=3.3÷(8.98-7.44+50%),
=3.3÷(1.54+50%),
=3.3÷2.04,
=1
.
3 |
4 |
19 |
50 |
=(8.38-7.38)×2.75-27.5%,
=2.75-27.5%,
=2.475;
(2)4875÷75-253×32÷128,
=65-8096÷128,
=65-63.25,
=1.75;
(3)[254-56×(2
5 |
12 |
19 |
60 |
=[254-56×(1.1+2.275)]÷65%,
=[254-56×3.375]÷65%,
=[254-189]÷65%,
=65÷65%,
=100;
(4)3.3÷(8.98-11.16×
2 |
3 |
=3.3÷(8.98-7.44+50%),
=3.3÷(1.54+50%),
=3.3÷2.04,
=1
21 |
34 |
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