求30道有理数的加减乘除混合运算(包括乘方和负数)10月7日之前要
1个回答
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/是除,^是次方*
是乘号
3+2^2×(-1/5)
解:原式=3+4×(-1/5)
=3-4/5
=11/5
18-6÷(-2)×(-1/3)
解:原式=18-(-3)×(-1/3)
=18-1
=17
(-3)^2×[-2/3+(-5/9)]
解:原式=9×(-11/9)
=-11
8+(-3)^2×(-2)
解:原式=8+9×(-2)
=8-18
=-10
100÷(-2)^2-(-2)÷(-2/3)
解:原式=100÷4-3
=25-3
=22
36×(1/2-1/3)^2
解:原式=36×(1/6)^2
=36×(1/36)
=1
12.7÷(-8/19)×0
解:原式=0
4×(-3)^2+6
解:原式=4×9+6
=36+6
=42
(-3/4)×(-8+2/3-1/3)
解:原式=(-3/4)×(-8+1/3)
=(-3/4)×(-23/3)
=23/4
(-2)^3-13÷(-1/2)
解:原式=(-8)-(-26)
=18
0-2^3÷(-4)^3-1/8
解:原式=0-8÷(-64)-1/8
=0+1/8-1/8
=0
(-2)^3×0.5-(-1.6)^2÷(-2)^2
解:原式=(-8)×(1/2)-(-8/5)^2÷4
=(-4)-(64/25)÷4
=(-4)-16/25
=-116/25
(-3/2)×[(-2/3)^2-2]
解:原式=(-3/2)×(4/9-2)
=(-3/2)×(-14/9)
=7/3
[(-3)^2-(-5)^2]÷(-2)
解:原式=(9-25)÷(-2)
=(-16)÷(-2)
=8
16÷(-2)^3-(-1/8)×(-4)
解:原式=16÷(-8)-1/2
=-2-1/2
=-5/2
-10+8÷(-2)2-(-4)×(-3)
解:原式=-10+8÷4-(-4)×(-3)
=-10=2-12
=-20
(1).-1²
-(1-
0.5)*1/3-[2-(-3)²]
(2).(-1)²÷1/4-(5-8)*3的负1次方+√4
(3).6*(-2)²÷(-2³)
(4).(-2)²-2²+(2/3)²-2/3²
(5).﹙-4)*8*(-2.5)*(-125)
(6).(-1155)÷[﹙﹣11﹚×﹙+3﹚×﹙﹣5﹚]
(7).3³
*
(-1/3)³-(-2)*4÷(-2/3)的四次方
(8).-3²
*
1.2²÷(-0.3)³+(-1/3)²
*
(-3)³÷(-1)²³
(9).(-2)²-2²-
|
-1/4
|*(-10)²
(10).(-5/2)*(-0.5)³*(-2)²*(-8)
(11).-1-﹛(-3)³-[3+0.4*(-1又1/2)]÷(-2)﹜
(12).0.25*(-2)³-[4÷(-2/3)²+1]
(13).375÷(-2/3)÷(-3/2)
(14).-12*(-1/3+1/4-1/6)
答案:(1)35/6(2)
7(3)-3
(4)2/9
(5)-10000
(6)-7
(7)39又1/2
(8)483
(9)-25
(10)-10
(11)24.8
(12)-12
(13)375
(14)3
是乘号
3+2^2×(-1/5)
解:原式=3+4×(-1/5)
=3-4/5
=11/5
18-6÷(-2)×(-1/3)
解:原式=18-(-3)×(-1/3)
=18-1
=17
(-3)^2×[-2/3+(-5/9)]
解:原式=9×(-11/9)
=-11
8+(-3)^2×(-2)
解:原式=8+9×(-2)
=8-18
=-10
100÷(-2)^2-(-2)÷(-2/3)
解:原式=100÷4-3
=25-3
=22
36×(1/2-1/3)^2
解:原式=36×(1/6)^2
=36×(1/36)
=1
12.7÷(-8/19)×0
解:原式=0
4×(-3)^2+6
解:原式=4×9+6
=36+6
=42
(-3/4)×(-8+2/3-1/3)
解:原式=(-3/4)×(-8+1/3)
=(-3/4)×(-23/3)
=23/4
(-2)^3-13÷(-1/2)
解:原式=(-8)-(-26)
=18
0-2^3÷(-4)^3-1/8
解:原式=0-8÷(-64)-1/8
=0+1/8-1/8
=0
(-2)^3×0.5-(-1.6)^2÷(-2)^2
解:原式=(-8)×(1/2)-(-8/5)^2÷4
=(-4)-(64/25)÷4
=(-4)-16/25
=-116/25
(-3/2)×[(-2/3)^2-2]
解:原式=(-3/2)×(4/9-2)
=(-3/2)×(-14/9)
=7/3
[(-3)^2-(-5)^2]÷(-2)
解:原式=(9-25)÷(-2)
=(-16)÷(-2)
=8
16÷(-2)^3-(-1/8)×(-4)
解:原式=16÷(-8)-1/2
=-2-1/2
=-5/2
-10+8÷(-2)2-(-4)×(-3)
解:原式=-10+8÷4-(-4)×(-3)
=-10=2-12
=-20
(1).-1²
-(1-
0.5)*1/3-[2-(-3)²]
(2).(-1)²÷1/4-(5-8)*3的负1次方+√4
(3).6*(-2)²÷(-2³)
(4).(-2)²-2²+(2/3)²-2/3²
(5).﹙-4)*8*(-2.5)*(-125)
(6).(-1155)÷[﹙﹣11﹚×﹙+3﹚×﹙﹣5﹚]
(7).3³
*
(-1/3)³-(-2)*4÷(-2/3)的四次方
(8).-3²
*
1.2²÷(-0.3)³+(-1/3)²
*
(-3)³÷(-1)²³
(9).(-2)²-2²-
|
-1/4
|*(-10)²
(10).(-5/2)*(-0.5)³*(-2)²*(-8)
(11).-1-﹛(-3)³-[3+0.4*(-1又1/2)]÷(-2)﹜
(12).0.25*(-2)³-[4÷(-2/3)²+1]
(13).375÷(-2/3)÷(-3/2)
(14).-12*(-1/3+1/4-1/6)
答案:(1)35/6(2)
7(3)-3
(4)2/9
(5)-10000
(6)-7
(7)39又1/2
(8)483
(9)-25
(10)-10
(11)24.8
(12)-12
(13)375
(14)3
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