题目内容
下面的题怎样简便就怎样算
81.2-11÷7-
×3
÷8+
×
6696÷62-6.5×10.6
[
-(
-
)]÷
.
81.2-11÷7-
| 1 |
| 7 |
| 9 |
| 13 |
| 1 |
| 8 |
| 7 |
| 13 |
6696÷62-6.5×10.6
[
| 3 |
| 4 |
| 5 |
| 6 |
| 2 |
| 3 |
| 5 |
| 4 |
(1)81.2-11÷7-
×3,
=81.2-
-
,
=81.2-(
+
),
=81.2-2,
=79.2;
(2)
÷8+
×
,
=
×
+
×
,
=(
+
)×
,
=
×
,
=
;
(3)6696÷62-6.5×10.6,
=108-68.9,
=39.1;
(4)[
-(
-
)]÷
,
=[
-
]÷
,
=
×
,
=
.
| 1 |
| 7 |
=81.2-
| 11 |
| 7 |
| 3 |
| 7 |
=81.2-(
| 11 |
| 7 |
| 3 |
| 7 |
=81.2-2,
=79.2;
(2)
| 9 |
| 13 |
| 1 |
| 8 |
| 7 |
| 13 |
=
| 9 |
| 13 |
| 1 |
| 8 |
| 1 |
| 8 |
| 7 |
| 13 |
=(
| 9 |
| 13 |
| 7 |
| 13 |
| 1 |
| 8 |
=
| 16 |
| 13 |
| 1 |
| 8 |
=
| 2 |
| 13 |
(3)6696÷62-6.5×10.6,
=108-68.9,
=39.1;
(4)[
| 3 |
| 4 |
| 5 |
| 6 |
| 2 |
| 3 |
| 5 |
| 4 |
=[
| 3 |
| 4 |
| 1 |
| 6 |
| 5 |
| 4 |
=
| 7 |
| 12 |
| 4 |
| 5 |
=
| 7 |
| 15 |
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