题目内容
简便运算.
| 25×125×32 | 75×2.5+25×3.6 | 72×(
|
|
(1)25×125×32,
=25×125×8×4,
=(25×4)×(125×8),
=100×1000,
=100000;
(2)75×2.5+25×3.6,
=75×2.5+2.5×36,
=(75+36)×2.5,
=111×2.5,
=277.5;
(3)72×(
+
),
=72×
+72×
,
=27+16,
=43;
(4)
×
×16×8,
=(
×16)×(
×8),
=5×3,
=15.
=25×125×8×4,
=(25×4)×(125×8),
=100×1000,
=100000;
(2)75×2.5+25×3.6,
=75×2.5+2.5×36,
=(75+36)×2.5,
=111×2.5,
=277.5;
(3)72×(
| 3 |
| 8 |
| 2 |
| 9 |
=72×
| 3 |
| 8 |
| 2 |
| 9 |
=27+16,
=43;
(4)
| 5 |
| 16 |
| 3 |
| 8 |
=(
| 5 |
| 16 |
| 3 |
| 8 |
=5×3,
=15.
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