下面各题,怎样算简便就怎样计算 51×101= 3 7 × 2 3

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 =

(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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