问题 解答题
下面各题,怎样算简便就怎样计算
51×101=
3
7
×
2
3
×
7
12
=
44×1.6-0.16×40=
5.04-2.72-0.28=
1
8
÷
3
4
×
6
11
=
165×
4
7
+165×
3
7
=
答案

(1)51×101,

=51×(100+1),

=51×100+51×1,

=5100+51,

=5151;

(2)

3
7
×
2
3
×
7
12

=

1
6

(3)44×1.6-0.16×40,

=44×1.6-1.6×4,

=(44-4)×1.6,

=40×1.6,

=64;

(4)5.04-2.72-0.28,

=5.04-(2.72+0.28),

=5.04-3,

=2.04;

(5)

1
8
÷
3
4
×
6
11

=

1
8
×
4
3
×
6
11

=

1
11

(6)165×

4
7
+165×
3
7

=165×(

4
7
+
3
7
),

=165×1,

=165.

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