计算.(1)0.75×3.66-34×2.66;(2)(-12)2001+(12)2000;(3)2×562+8×56×22+2×442.
计算.
(1)0.75×3.66-×2.66;
(2)(-)2001+()2000;
(3)2×562+8×56×22+2×442.×2.66;
(2)(-)2001+()2000;
(3)2×562+8×56×22+2×442.3 |
3 | 4 |
4 | )2001+()2000;
(3)2×562+8×56×22+2×442.1 |
1 | 2 |
2 | 2001)2000;
(3)2×562+8×56×22+2×442.1 |
1 | 2 |
2 | 200022
答案和解析
(1)原式=0.75×(3.66-2.66)
=0.75×1
=0.75;
(2)原式=-
×()2000+()2000
=(-+1)×()2000
=()2001;
(3)原式=2×(562+4×56×22+442)
=2×(56+44)2
=2×10000
=20000. 1 |
1 | 1
2 |
2 | 2×(
)2000+()2000
=(-+1)×()2000
=()2001;
(3)原式=2×(562+4×56×22+442)
=2×(56+44)2
=2×10000
=20000. 1 |
1 | 1
2 |
2 | 2)
20002000+(
)2000
=(-+1)×()2000
=()2001;
(3)原式=2×(562+4×56×22+442)
=2×(56+44)2
=2×10000
=20000. 1 |
1 | 1
2 |
2 | 2)
20002000
=(-
+1)×()2000
=()2001;
(3)原式=2×(562+4×56×22+442)
=2×(56+44)2
=2×10000
=20000. 1 |
1 | 1
2 |
2 | 2+1)×(
)2000
=()2001;
(3)原式=2×(562+4×56×22+442)
=2×(56+44)2
=2×10000
=20000. 1 |
1 | 1
2 |
2 | 2)
20002000
=(
)2001;
(3)原式=2×(562+4×56×22+442)
=2×(56+44)2
=2×10000
=20000. 1 |
1 | 1
2 |
2 | 2)
20012001;
(3)原式=2×(56
22+4×56×22+44
22)
=2×(56+44)
22
=2×10000
=20000.
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