题目内容
| 脱式计算.(能简算的要简算,不简算不得分) 125
|
| ||||||||||
|
(
|
(1)125
×8
=(125+
)×8,
=125×8+
×8,
=1000+3,
=1003;
(2)
×43+
×36+
=(1+43+36)×
,
=80×
,
=70;
(3)
×(
÷
)
=
×
,
=
;
(4)(
+
)×27
=
×27+
×27,
=6+2,
=8.
| 3 |
| 8 |
=(125+
| 3 |
| 8 |
=125×8+
| 3 |
| 8 |
=1000+3,
=1003;
(2)
| 7 |
| 8 |
| 7 |
| 8 |
| 7 |
| 8 |
=(1+43+36)×
| 7 |
| 8 |
=80×
| 7 |
| 8 |
=70;
(3)
| 5 |
| 9 |
| 3 |
| 4 |
| 1 |
| 10 |
=
| 5 |
| 9 |
| 15 |
| 2 |
=
| 25 |
| 6 |
(4)(
| 2 |
| 9 |
| 2 |
| 27 |
=
| 2 |
| 9 |
| 2 |
| 27 |
=6+2,
=8.
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