题目内容
递等式计算.(能简便计算的要简便计算)
| 826-765÷15 7.2×99+7.2 |
|
6.13-
|
36×(
|
826-765÷15,
=826-51,
=775;
(2)7.2×99+7.2,
=7.2×(99+1),
=720;
(3)
÷[(
-
)×
],
=
÷[
×
],
=
×
,
=5;
(4)6.13-
-
+0.87,
=6.13+0.87-(
+
),
=7-1,
=6;
(5)36×(
-
+
),
=36×
-36×
+36×
,
=27-6+8,
=29;
=826-51,
=775;
(2)7.2×99+7.2,
=7.2×(99+1),
=720;
(3)
| 3 |
| 4 |
| 3 |
| 5 |
| 1 |
| 4 |
| 3 |
| 7 |
=
| 3 |
| 4 |
| 7 |
| 20 |
| 3 |
| 7 |
=
| 3 |
| 4 |
| 20 |
| 3 |
=5;
(4)6.13-
| 2 |
| 3 |
| 1 |
| 3 |
=6.13+0.87-(
| 2 |
| 3 |
| 1 |
| 3 |
=7-1,
=6;
(5)36×(
| 3 |
| 4 |
| 1 |
| 6 |
| 2 |
| 9 |
=36×
| 3 |
| 4 |
| 1 |
| 6 |
| 2 |
| 9 |
=27-6+8,
=29;
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