(1)206×18+292
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(1)206×18+292
(2)14.4÷0.2×3
(3)(6
−5
+1
)×
(2)14.4÷0.2×3
(3)(6
3 |
4 |
7 |
12 |
5 |
12 |
3 |
11 |
(1)206×18+292,
=3708+292,
=4000;
(2)14.4÷0.2×3,
=72×3,
=216;
(3)(6
3
4-5
7
12+1
5
12)×
3
11,
=(6
9
12-5
7
12+1
5
12)×
3
11,
=
31
12×
3
11,
=
31
44;
(4)[(1.5+2
2
3)×1.6]÷
1
3,
=[(
3
2+
8
3)×
8
5]÷
1
3,
=[
25
6×
8
5]×3,
=
20
3×3,
=20;
(5)2005×20062006-2006×20052005,
=2005×2006×10001-2006×2005×10001,
=0;
(6)2006-2005+2004-2003+2002-2001+…+4-3+2-1,
=(2006-2005)+(2004-2003)+…+(4-3)+(2-1),
=1×1003,
=1003.
=3708+292,
=4000;
(2)14.4÷0.2×3,
=72×3,
=216;
(3)(6
3
4-5
7
12+1
5
12)×
3
11,
=(6
9
12-5
7
12+1
5
12)×
3
11,
=
31
12×
3
11,
=
31
44;
(4)[(1.5+2
2
3)×1.6]÷
1
3,
=[(
3
2+
8
3)×
8
5]÷
1
3,
=[
25
6×
8
5]×3,
=
20
3×3,
=20;
(5)2005×20062006-2006×20052005,
=2005×2006×10001-2006×2005×10001,
=0;
(6)2006-2005+2004-2003+2002-2001+…+4-3+2-1,
=(2006-2005)+(2004-2003)+…+(4-3)+(2-1),
=1×1003,
=1003.
(1)206×18+292
18(1)
计算(1)18
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