题目内容
| 9999×2010+2010 | 36×(
| 1.6x+6.4x=3.6 | ||||
| 456+123+544+877 | 2.25×4.8+77.5×48% |
(1)9999×2010+2010
=(9999+1)×2010,
=10000×2010,
=20100000;
(2)36×(
+
)
=36×
+36×
,
=8+21,
=29;
(3)1.6x+6.4x=3.6
8x=3.6
x=0.45
(4)456+123+544+877
=(456+544)+(123+877),
=1000+1000,
=2000;
(5)2.25×4.8+77.5×48%
=2.25×4.8+7.75×4.8,
=(2.25+7.75)×4.8,
=10×4.8,
=48.
=(9999+1)×2010,
=10000×2010,
=20100000;
(2)36×(
| 2 |
| 9 |
| 7 |
| 12 |
=36×
| 2 |
| 9 |
| 7 |
| 12 |
=8+21,
=29;
(3)1.6x+6.4x=3.6
8x=3.6
x=0.45
(4)456+123+544+877
=(456+544)+(123+877),
=1000+1000,
=2000;
(5)2.25×4.8+77.5×48%
=2.25×4.8+7.75×4.8,
=(2.25+7.75)×4.8,
=10×4.8,
=48.
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