题目内容
| (1)9750÷25+75 | (2)(2.32+1.8)×6.5 | (3)101×7.8 | |||||||||||||||
(4)
| (5)
|
(1)9750÷25+75,
=390+75,
=465;
(2)(2.32+1.8)×6.5,
=4.12×6.5,
=26.78;
(3)101×7.8,
=(100+1)×7.8,
=100×7.8+1×7.8,
=780+7.8,
=787.8;
(4)
×
+
÷
,
=
+3,
=3
;
(5)
÷[
-(
+
)],
=
÷[
-
],
=
÷
,
=
.
=390+75,
=465;
(2)(2.32+1.8)×6.5,
=4.12×6.5,
=26.78;
(3)101×7.8,
=(100+1)×7.8,
=100×7.8+1×7.8,
=780+7.8,
=787.8;
(4)
| 5 |
| 8 |
| 8 |
| 15 |
| 3 |
| 4 |
| 1 |
| 4 |
=
| 1 |
| 3 |
=3
| 1 |
| 3 |
(5)
| 1 |
| 3 |
| 3 |
| 4 |
| 1 |
| 18 |
| 5 |
| 12 |
=
| 1 |
| 3 |
| 3 |
| 4 |
| 17 |
| 36 |
=
| 1 |
| 3 |
| 5 |
| 18 |
=
| 6 |
| 5 |
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