题目内容
计算下面各题:
| 4
|
| ||||||||||||||||
| 〔16.8-(1.6+3.8)〕÷1.9; | 9.8×100.1; | 8.4÷3.5. |
(1)
+(
-
),
=(
+
)-
,
=1-
,
=
;
(2)4
-2.5+1
,
=4
-2
+1
,
=4
-2
+1
,
=3
;
(3)
-
-
,
=
-(
+
),
=
-
,
=
;
(4)[16.8-(1.6+3.8)]÷1.9,
=[16.8-5.4]÷1.9,
=11.4÷1.9,
=6;
(5)9.8×100.1,
=9.8×(100+0.1),
=980+0.98,
=980.98;
(6)8.4÷3.5=2.4.
| 1 |
| 8 |
| 7 |
| 8 |
| 5 |
| 12 |
=(
| 1 |
| 8 |
| 7 |
| 8 |
| 5 |
| 12 |
=1-
| 5 |
| 12 |
=
| 7 |
| 12 |
(2)4
| 1 |
| 3 |
| 3 |
| 4 |
=4
| 1 |
| 3 |
| 1 |
| 2 |
| 3 |
| 4 |
=4
| 4 |
| 12 |
| 6 |
| 12 |
| 9 |
| 12 |
=3
| 7 |
| 12 |
(3)
| 2 |
| 3 |
| 1 |
| 9 |
| 2 |
| 9 |
=
| 2 |
| 3 |
| 1 |
| 9 |
| 2 |
| 9 |
=
| 2 |
| 3 |
| 1 |
| 3 |
=
| 1 |
| 3 |
(4)[16.8-(1.6+3.8)]÷1.9,
=[16.8-5.4]÷1.9,
=11.4÷1.9,
=6;
(5)9.8×100.1,
=9.8×(100+0.1),
=980+0.98,
=980.98;
(6)8.4÷3.5=2.4.
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