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(2014•泉州模拟)用递等式计算102×22-1428÷144.7-0.7×1.5-0.958.75×3.6+12.5×0.3613÷[(23+15)×113]

题目详情
(2014•泉州模拟)
用递等式计算
102×22-1428÷14           
4.7-0.7×1.5-0.95 8.75×3.6+12.5×0.36  
1
3
÷[(
2
3
+
1
5
)×
1
13
]
▼优质解答
答案和解析
(1)102×22-1428÷14
=2244-102
=2142;

(2)4.7-0.7×1.5-0.95
=4.7-1.05-0.95
=4.7-(1.05+0.95)
=4.7-2
=2.7;

(3)8.75×3.6+12.5×0.36
=8.75×3.6+1.25×3.6
=(8.75+1.25)×3.6
=10×3.6
=36;

(4)
1
3
÷[(
2
3
+
1
5
)×
1
13
]
=
1
3
÷[
13
15
×
1
13
]
=
1
3
÷
1
15

=5.