题目内容
用递等式计算.
848-800÷16×12
12.48-0.7×(5.12÷0.8)
×[
-(
-
)].
848-800÷16×12
12.48-0.7×(5.12÷0.8)
| 8 |
| 9 |
| 3 |
| 4 |
| 7 |
| 16 |
| 1 |
| 4 |
(1)848-800÷16×12,
=848-50×12,
=848-600,
=248;
(2)12.48-0.7×(5.12÷0.8),
=12.48-0.7×6.4,
=12.48-4.48,
=8;
(3)
×[
-(
-
)],
=
×[
-
],
=
×
,
=
.
=848-50×12,
=848-600,
=248;
(2)12.48-0.7×(5.12÷0.8),
=12.48-0.7×6.4,
=12.48-4.48,
=8;
(3)
| 8 |
| 9 |
| 3 |
| 4 |
| 7 |
| 16 |
| 1 |
| 4 |
=
| 8 |
| 9 |
| 3 |
| 4 |
| 3 |
| 16 |
=
| 8 |
| 9 |
| 9 |
| 16 |
=
| 1 |
| 2 |
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