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我会用简便方法巧计算.16×2.5×1.25(58-37)×562.7+99×2.7.

题目详情

5
8
-
3
7
)×56         2.7+99×2.7.
5
8
5588
3
7
)×56         2.7+99×2.7.
3
7
3377
▼优质解答
答案和解析
(1)16×2.5×1.25
=(2×8)×2.5×1.25
=(2×2.5)×(8×1.25)
=5×10
=50;

(2)(
5
8
-
3
7
)×56 
=
5
8
×56-
3
7
×56
=35-24
=11;

(3)2.7+99×2.7
=2.7+99×2.7×1
=2.7×(99+1)
=2.7×100
=270.
5
8
555888-
3
7
)×56 
=
5
8
×56-
3
7
×56
=35-24
=11;

(3)2.7+99×2.7
=2.7+99×2.7×1
=2.7×(99+1)
=2.7×100
=270.
3
7
333777)×56 
=
5
8
×56-
3
7
×56
=35-24
=11;

(3)2.7+99×2.7
=2.7+99×2.7×1
=2.7×(99+1)
=2.7×100
=270.
5
8
555888×56-
3
7
×56
=35-24
=11;

(3)2.7+99×2.7
=2.7+99×2.7×1
=2.7×(99+1)
=2.7×100
=270.
3
7
333777×56
=35-24
=11;

(3)2.7+99×2.7
=2.7+99×2.7×1
=2.7×(99+1)
=2.7×100
=270.