题目内容
| 2.05÷(1.5+0.55)×99% | (
| ||||||||||||
87.5%×
|
|
(1)2.05÷(1.5+0.55)×99%,
=2.05÷2.05×99%,
=1×99%,
=0.99;
(2)(
×
-
)÷
,
=(
-
)÷
,
=0÷
,
=0;
(3)87.5%×
+12.5%×
,
=(87.5%+12.5%)×
,
=1×
,
=
;
(4)
×(
+
)÷
,
=
×
÷
,
=
×
×
,
=
.
=2.05÷2.05×99%,
=1×99%,
=0.99;
(2)(
| 3 |
| 8 |
| 2 |
| 3 |
| 1 |
| 4 |
| 97 |
| 20 |
=(
| 1 |
| 4 |
| 1 |
| 4 |
| 97 |
| 20 |
=0÷
| 97 |
| 20 |
=0;
(3)87.5%×
| 8 |
| 9 |
| 8 |
| 9 |
=(87.5%+12.5%)×
| 8 |
| 9 |
=1×
| 8 |
| 9 |
=
| 8 |
| 9 |
(4)
| 14 |
| 15 |
| 4 |
| 21 |
| 3 |
| 14 |
| 2 |
| 15 |
=
| 14 |
| 15 |
| 17 |
| 42 |
| 2 |
| 15 |
=
| 14 |
| 15 |
| 17 |
| 42 |
| 15 |
| 2 |
=
| 17 |
| 6 |
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