题目内容
(1)
×73+
×14×6(2)12÷
-
×
(3)47
÷46.
| 14 |
| 17 |
| 2 |
| 17 |
| 3 |
| 4 |
| 3 |
| 4 |
| 1 |
| 12 |
| 1 |
| 45 |
(1)
×73+
×14×6,
=
×73+
×7×2×6,
=
×73+
×12,
=
×(73+12),
=
×85,
=70;
(2)12÷
-
×
,
=16-
,
=15
;
(3)47
÷46,
=(46+
)×
,
=46×
+
×
,
=1+
,
=1
.
| 14 |
| 17 |
| 2 |
| 17 |
=
| 14 |
| 17 |
| 2 |
| 17 |
=
| 14 |
| 17 |
| 14 |
| 17 |
=
| 14 |
| 17 |
=
| 14 |
| 17 |
=70;
(2)12÷
| 3 |
| 4 |
| 3 |
| 4 |
| 1 |
| 12 |
=16-
| 1 |
| 16 |
=15
| 15 |
| 16 |
(3)47
| 1 |
| 45 |
=(46+
| 46 |
| 45 |
| 1 |
| 46 |
=46×
| 1 |
| 46 |
| 46 |
| 45 |
| 1 |
| 46 |
=1+
| 1 |
| 45 |
=1
| 1 |
| 45 |
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