题目内容
怎样算简便就怎样算:
2008×
;
72.5+12.5+12.5÷
;
[(
+1
)×
-0.25]÷
;
(6×12.5+12.5×5)×
÷
.
2008×
| 2006 |
| 2007 |
72.5+12.5+12.5÷
| 1 |
| 6 |
[(
| 8 |
| 9 |
| 1 |
| 3 |
| 3 |
| 4 |
| 1 |
| 12 |
(6×12.5+12.5×5)×
| 5 |
| 33 |
| 1 |
| 8 |
(1)2008×
=(2007+1)×
,
=2007×
+
,
=2006+
,
=2006
;
(2)72.5+12.5+12.5÷
=72.5+12.5+75,
=160;
(3)[(
+1
)×
-0.25]÷
=[
×
+
×
-
]÷
,
=[
+1-
]÷
,
=
×12+12-
×12,
=8+12-3,
=17,
(4)(6×12.5+12.5×5)×
÷
=[12.5×(6+5)]×
÷
,
=
×11×
×8,
=
(166
).
| 2006 |
| 2007 |
=(2007+1)×
| 2006 |
| 2007 |
=2007×
| 2006 |
| 2007 |
| 2006 |
| 2007 |
=2006+
| 2006 |
| 2007 |
=2006
| 2006 |
| 2007 |
(2)72.5+12.5+12.5÷
| 1 |
| 6 |
=72.5+12.5+75,
=160;
(3)[(
| 8 |
| 9 |
| 1 |
| 3 |
| 3 |
| 4 |
| 1 |
| 12 |
=[
| 8 |
| 9 |
| 3 |
| 4 |
| 4 |
| 3 |
| 3 |
| 4 |
| 1 |
| 4 |
| 1 |
| 12 |
=[
| 2 |
| 3 |
| 1 |
| 4 |
| 1 |
| 12 |
=
| 2 |
| 3 |
| 1 |
| 4 |
=8+12-3,
=17,
(4)(6×12.5+12.5×5)×
| 5 |
| 33 |
| 1 |
| 8 |
=[12.5×(6+5)]×
| 5 |
| 33 |
| 1 |
| 8 |
=
| 25 |
| 2 |
| 5 |
| 33 |
=
| 500 |
| 3 |
| 2 |
| 3 |
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