题目内容
怎样算简便就怎样算:
÷[(
-
)×
];
15.28-3.99-9.01;
×
-
÷4.
| 6 |
| 7 |
| 4 |
| 7 |
| 1 |
| 2 |
| 2 |
| 5 |
15.28-3.99-9.01;
| 14 |
| 15 |
| 1 |
| 4 |
| 2 |
| 15 |
(1)
÷[(
-
)×
],
=
÷[
×
],
=
÷
,
=
×35,
=30;
(2)15.28-3.99-9.01,
=15.28-(3.99+9.01),
=15.28-13,
=2.28;
(3)
×
-
÷4,
=
×
-
×
,
=(
-
)×
,
=
×
,
=
.
| 6 |
| 7 |
| 4 |
| 7 |
| 1 |
| 2 |
| 2 |
| 5 |
=
| 6 |
| 7 |
| 1 |
| 14 |
| 2 |
| 5 |
=
| 6 |
| 7 |
| 1 |
| 35 |
=
| 6 |
| 7 |
=30;
(2)15.28-3.99-9.01,
=15.28-(3.99+9.01),
=15.28-13,
=2.28;
(3)
| 14 |
| 15 |
| 1 |
| 4 |
| 2 |
| 15 |
=
| 14 |
| 15 |
| 1 |
| 4 |
| 2 |
| 15 |
| 1 |
| 4 |
=(
| 14 |
| 15 |
| 2 |
| 15 |
| 1 |
| 4 |
=
| 4 |
| 5 |
| 1 |
| 4 |
=
| 1 |
| 5 |
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