题目内容
8
| 4
| 〔
| 1.7÷[8
|
(1)8
+3
-8.25,
=8.4+3.3-8.25,
=8.4-8.25+3.3,
=0.15+3.3,
=3.45;
(2)4
×38.7+4.6+4
×0.3,
=4
×38.7+4
+4
×0.3,
=(38.7+1+0.3)×4
,
=40×
,
=184;
(3)(
÷3-0.1)×(1-
),
=(
×
-
)×
,
=(
-
)×
,
=
×
,
=
;
(4)1.7÷[8
-(6.6+5
÷9)],
=1.7÷[8
-(6
+
×
)],
=1.7÷[8
-(6
+
)],
=1.7÷[8
-7
],
=1.7÷
,
=1.7×
;
=1
.
| 2 |
| 5 |
| 3 |
| 10 |
=8.4+3.3-8.25,
=8.4-8.25+3.3,
=0.15+3.3,
=3.45;
(2)4
| 3 |
| 5 |
| 3 |
| 5 |
=4
| 3 |
| 5 |
| 3 |
| 5 |
| 3 |
| 5 |
=(38.7+1+0.3)×4
| 3 |
| 5 |
=40×
| 23 |
| 5 |
=184;
(3)(
| 3 |
| 4 |
| 1 |
| 3 |
=(
| 3 |
| 4 |
| 1 |
| 3 |
| 1 |
| 10 |
| 2 |
| 3 |
=(
| 1 |
| 4 |
| 1 |
| 10 |
| 2 |
| 3 |
=
| 3 |
| 20 |
| 2 |
| 3 |
=
| 1 |
| 10 |
(4)1.7÷[8
| 1 |
| 3 |
| 2 |
| 5 |
=1.7÷[8
| 1 |
| 3 |
| 3 |
| 5 |
| 27 |
| 5 |
| 1 |
| 9 |
=1.7÷[8
| 1 |
| 3 |
| 3 |
| 5 |
| 3 |
| 5 |
=1.7÷[8
| 1 |
| 3 |
| 1 |
| 5 |
=1.7÷
| 17 |
| 15 |
=1.7×
| 15 |
| 17 |
=1
| 1 |
| 2 |
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