题目内容
| 能简算的要简算. 3.2×1.25×0.25 | 5.8×[1÷(2.1-2.09)] |
| ||||||||||||||||||
42÷(
|
| (
|
3.2×1.25×0.25,
=(0.8×1.25)×(4×0.25),
=1×1,
=1;
5.8×[1÷(2.1-2.09)],
=5.8×[1÷0.01],
=5.8×100,
=580;
×101-
,
=
×(101-1),
=
×100,
=62;
42÷(
+
),
=42÷
,
=42×
,
=36;
×
+
×75%,
=0.75×(
+
),
=0.75×1,
=0.75;
(
-
)×(
+
),
=
×
,
=
.
=(0.8×1.25)×(4×0.25),
=1×1,
=1;
5.8×[1÷(2.1-2.09)],
=5.8×[1÷0.01],
=5.8×100,
=580;
| 31 |
| 50 |
| 31 |
| 50 |
=
| 31 |
| 50 |
=
| 31 |
| 50 |
=62;
42÷(
| 1 |
| 2 |
| 2 |
| 3 |
=42÷
| 7 |
| 6 |
=42×
| 6 |
| 7 |
=36;
| 3 |
| 4 |
| 7 |
| 8 |
| 1 |
| 8 |
=0.75×(
| 7 |
| 8 |
| 1 |
| 8 |
=0.75×1,
=0.75;
(
| 7 |
| 8 |
| 5 |
| 16 |
| 5 |
| 9 |
| 2 |
| 3 |
=
| 9 |
| 16 |
| 11 |
| 9 |
=
| 11 |
| 16 |
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