题目内容
简算
| 6
| 9
|
(1)
÷2
+
×
,
=
×
+
×
,
=
×(
+
),
=
×1,
=
;
(2)6
-3.5+3.75-5
,
=6
+3.75-3.5-5
,
=(6.25+3.75)-(3.5+5.5),
=10-9,
=1;
(3)9
×4.25+4
×
-4
×2,
=9
×4
+4
×
-4
×2,
=
×(9
+
-2),
=
×8,
=34.
| 7 |
| 9 |
| 1 |
| 5 |
| 2 |
| 9 |
| 5 |
| 11 |
=
| 7 |
| 9 |
| 5 |
| 11 |
| 2 |
| 9 |
| 5 |
| 11 |
=
| 5 |
| 11 |
| 7 |
| 9 |
| 2 |
| 9 |
=
| 5 |
| 11 |
=
| 5 |
| 11 |
(2)6
| 1 |
| 4 |
| 1 |
| 2 |
=6
| 1 |
| 4 |
| 1 |
| 2 |
=(6.25+3.75)-(3.5+5.5),
=10-9,
=1;
(3)9
| 5 |
| 6 |
| 1 |
| 4 |
| 1 |
| 6 |
| 1 |
| 4 |
=9
| 5 |
| 6 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 6 |
| 1 |
| 4 |
=
| 17 |
| 4 |
| 5 |
| 6 |
| 1 |
| 6 |
=
| 17 |
| 4 |
=34.
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