要加、减、乘、除、乘方物种运算,各种运算至少150道.
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/08/25 03:14:54
要加、减、乘、除、乘方物种运算,各种运算至少150道.
上面说的是有理数加减题。还要100道整式加减。
上面说的是有理数加减题。还要100道整式加减。
[|-98|+76+(-87)]-23[56+(-75)-(7)]-(8+4+3)
-(-89)+|-87|-23+[-75-(7)+76]-(10+39-24)
|-9.8|+(-4.6)-[8.7-(-1.3)]+(-5.4)-(-0.2)
[-(-84)+46]-|-9.1|+(+1.9)
[-(-90)+(-34)]-(+43)+(-57)+10
5+21+8/2-6-59
68/21-8-11-8+61
-2/9-7/9-56
4.6-(-3/4+1.6-4-3/4)
1/2+3+5/6-7/12
[2/3-4-1/4+(-0.4)]/1/3+2
22+(-4)+(-2)+4-3
-2+8-8-1/2+8/1/8
(2/3+1/2)/(-1/12)+(-12)
2/(-2)+0/7-(-8)-(-2)
(1/4-5/6+1/3+2/3)/1/2
18-6/(-3)+(-2)
(5+3/8-8/30/(-2)-3
(-84)/2+(-3)/(-6)
1/2-(-4/15)/2/3
(-5)-(+3)+(-9)-(-7)
(-5)+(+8)-(+2)-(-3)
5-(-3 )-(+7)-2
(-21)+(+16)-(-13)-(+7)+(-6)
2 -(- )+(-0.5)+(+2)-(+ )-2
(-7)-(+5)+(+3)-(-9)
-(+2 )-(-1 )-(+3 )
-14 5 (-3)=-12
-12 (-7) (-5) (-6)
23.33-(+76.76)
(-6-24.3)-(-12+9.1)+(0-2.1)
6+(7-8)
(-78)+25+26+27
(-3)+(-2)+(-1)
39+28+26-125
[2/3-4-1/4+(-0.4)]+1/3+2
22+(-4)+(-2)+4-3
(-2)+7-(-16)-(-3)
(-5)-(+3)+(-9)-(-7)
(-1/4)+(-5/6)-(-1/3)+2/3-1/6
2/3+(-1/2)-(-1/3)+1/4
(-5)+(-8)-(-2)-3
(-21)+(+16)-(-13)-(+7)+(-6)
(-2/3)+(-1/3)+3/4+(-1/4)
(-0.73)+(-0.62)-(+0.75)
(-19)+(-11)-(-33)+27
(-6.4)+(-3.6)-(-12.5)+4.5
(-81)+(-19)-27+33
(-3.2)-(-6.2)+(-5.1)+(-4.9)
(-6.9)+(-3.1)+(+2.7)+(-2.1) 有理数的加减混合运算 *是乘号.
[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)
5+21*8/2-6-59
68/21-8-11*8+61
-2/9-7/9-56
4.6-(-3/4+1.6-4-3/4)
1/2+3+5/6-7/12
[2/3-4-1/4*(-0.4)]/1/3+2
22+(-4)+(-2)+4*3
-2*8-8*1/2+8/1/8
(2/3+1/2)/(-1/12)*(-12)
(-28)/(-6+4)+(-1)
2/(-2)+0/7-(-8)*(-2)
(1/4-5/6+1/3+2/3)/1/2
18-6/(-3)*(-2)
(5+3/8*8/30/(-2)-3
(-84)/2*(-3)/(-6)
1/2*(-4/15)/2/3
-3x+2y-5x-7y
计算 写出计算过程
(-6)-(-7)+(-5)-(+9) 30.
(-5)×(-3 )-15×1 +〔 -( )×24〕
有理数的加减法混合运算
已知|a|=3.|b|=4,求a+b和a-b的值.
若|a|=5,|b|=19,且|a+b|=-(a+b),求a-b的值.
计算题:
23+(-73)
(-84)+(-49)
7+(-2.04)
4.23+(-7.57)
(-7/3)+(-7/6)
9/4+(-3/2)
3.75+(2.25)+5/4
-3.75+(+5/4)+(-1.5)
用简便方法计算:
(-17/4)+(-10/3)+(+13/3)+(11/3) (2)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)
[|-98|+76+(-87)]-23[56+(-75)-(7)]-(8+4+3)
-(-89)+|-87|-23+[-75-(7)+76]-(10+39-24)
|-9.8|+(-4.6)-[8.7-(-1.3)]+(-5.4)-(-0.2)
[-(-84)+46]-|-9.1|+(+1.9)
[-(-90)+(-34)]-(+43)+(-57)+10
5+21+8/2-6-59
68/21-8-11-8+61
-2/9-7/9-56
4.6-(-3/4+1.6-4-3/4)
1/2+3+5/6-7/12
[2/3-4-1/4+(-0.4)]/1/3+2
22+(-4)+(-2)+4-3
-2+8-8-1/2+8/1/8
(2/3+1/2)/(-1/12)+(-12)
2/(-2)+0/7-(-8)-(-2)
(1/4-5/6+1/3+2/3)/1/2
18-6/(-3)+(-2)
(5+3/8-8/30/(-2)-3
(-84)/2+(-3)/(-6)
1/2-(-4/15)/2/3
(-5)-(+3)+(-9)-(-7)
(-5)+(+8)-(+2)-(-3)
5-(-3 )-(+7)-2
(-21)+(+16)-(-13)-(+7)+(-6)
2 -(- )+(-0.5)+(+2)-(+ )-2
(-7)-(+5)+(+3)-(-9)
-(+2 )-(-1 )-(+3 )
-14 5 (-3)=-12
-12 (-7) (-5) (-6)
23.33-(+76.76)
(-6-24.3)-(-12+9.1)+(0-2.1)
6+(7-8)
(-78)+25+26+27
(-3)+(-2)+(-1)
39+28+26-125
[2/3-4-1/4+(-0.4)]+1/3+2
22+(-4)+(-2)+4-3
(-2)+7-(-16)-(-3)
(-5)-(+3)+(-9)-(-7)
(-1/4)+(-5/6)-(-1/3)+2/3-1/6
2/3+(-1/2)-(-1/3)+1/4
(-5)+(-8)-(-2)-3
(-21)+(+16)-(-13)-(+7)+(-6)
(-2/3)+(-1/3)+3/4+(-1/4)
(-0.73)+(-0.62)-(+0.75)
(-19)+(-11)-(-33)+27
(-6.4)+(-3.6)-(-12.5)+4.5
(-81)+(-19)-27+33
(-3.2)-(-6.2)+(-5.1)+(-4.9)
(-6.9)+(-3.1)+(+2.7)+(-2.1)
-9+5×(-6) -(-4)2÷(-8)
15+(― )―15―(―0.25)
—48 ×
(2m+2)×4m2
(2x+y)2-(2x-y)2 ( xy)2•(-12x2y2)÷(- x3y)
[(3x+2y)(3x-2y)-(x+2y)(3x-2y)]÷3x
先化简后求值:m(m-3)-(m+3)(m-3),其中m=-4.
4×(-3)2-13+(-12 )-|-43| -32 -[(-2)2 -(1- × )÷(-2)]2x-19=7x+31 - = 1
化简(求值) 的值,其中
先化简,再求值,已知a = 1,b = — ,求多项式 的值
-2 -(-3) ×(-1) -(-1) -1-(1-0.5)× ×[2-(-3) ]
11+(-22)-3×(-11)
-2(x-1)=4 -8x=3-1/2x
-(-6) -12-(1-0.5)×(-1 )×[2-(-3)2]
-23-3×(-2)3-(-1)4 (-
先化简,再求值: ,其中 ,
化简:
先化简,再求值: ,其中x=-2,y= .
2(x-2)+2=x+1 2x-13 -5x-16 =1
解方程: 解方程:
-22+22×[(-1)10+|-1|]
先化简,再求值: ,其中
化简求值.2xy2+[7x-3(2x-1)-2xy2]+y,其中 .
3 -2( -3 )
; ; ;+(-2)+︱-2-3︱-5 ( )÷( )÷(-0.25)
︱ ︱×( - )― × (-1) 2008
5.6-7+3.4
32÷[(-2)3-(-4)] 化简:-3(2x-5)+6x
(-14)-(-16)-(+6) 解方程:5(8-3x)=x
先化简,再求值: ,其中
当 时,求代数式 的值
3×(-4)+(-28) ÷7 4×(-3)2-15÷(-3)-50
先化简,再求值: 2x2+(-x2+3xy+2y2)-(x2-xy+2y2),其中x= ,y=3.
4x+3=2(x-1)+1
6x-7=4x-5
先化简,再求值:(5a+2a2-3+4a3)-(-a+4a3+2a2),其中a=1
先化简,再求值: ,其中
当 时,求代数式 的值.
化简求值: ,其中
(-8)+10+2+(-1) 5+(-6)+3+9+(-4)+(-7)
(-0.8)+1.2+(-0.7)+(-2.1)+0.8+3.5 +(- )+ +(- )+(- )
(-17)+59+(-37) (-18.65)+(-6.15)+18.15+6.15
(-4 )+(-3 )+6 +(-2 ) (-0.5)+3 +2.75+(-5 )
(-1.9)+3.6+(-10.1)+1.4 (-7)+(+11)+(-13)+9
33 +(-2.16)+9 +(-3 ) 49 +(-78.21)+27 +(-21.79)
先化简再求值:4 +(-2 +5 )-2(3 - ),其中 =-1,b=-
(-32+3)×[(-1)2008-(1-0.5× )]
-22×|-3|+(-6) ×(- )-|+ |÷(- )
3(-2x-5)+2x=9 2x- = -1
化简求值:2x2+(-x2+3xy+2y2)-2(0.5x2- xy+y2),其中x= ,y=3.
化简求值 ,其中x=-1,y=
(-3)2-2 3÷ ×3 -12-[2-(1- ×0.5)]×[32-(-2)2]
(1- + )×(-48) 2x+3=x-1
(3x+7)=2-1.5x - =1
80% •x =(x+22)•75%
先化简,再求值 ,其中
[15.25-13-(-14.75)]×(-0.125)÷ ( )÷
-1 [ 8×(-3)]×0-(-5) 6÷(-2) (-4)×
-14-(-2)3×5+0.25÷(- )2
-42× 3× 22÷4 -12-[2-(1- ×0.5)]×[32-(-2)2]
(- + - )×(-48)
15+(― )―15―(―0.25)
29 ×(-12) 25× ―(―25)× +25×(- )
(—5.3)+(—3.2)—(—2.5)—(+4.8) (—3 )+(+8 )—(—5 )
-2 +|5-8|+24÷(-3)
( ) (-24)
-22-
(- )+(+3.5)+(- )
3.6÷4.5-3×| - 19 |
(-3)×(-9)-8×(-5) -63÷7+45÷(-9)
-3×22-(-3×2)3 (-0.1)3-
-23-3×(-2)3-(-1)4 (-
[11×2-|3÷3|-(-3)2-33]÷ 2 )
2-7+4-3
4-(-2)3-33÷(-1) (-5)2×(- )÷(- )
(-2)2-(-1)3×( - )÷ - 25× -(-25)× -25×
1÷[(-2)2×0.52-(-2.24)÷(-2)3]-1 {4 +[-9×(+ )-0.8]}÷(-5 )
(-16)+(+27)+(+9)+(一24) (一5)+(一2)+(+9)一(一8)
(一3)×18+14 ;
; ;
(-24)×( - + )
-14-(-2)3×5+0.25÷(- )2
设A=2x +3x -x, B=4x +8x -2x+6,当x= 时,求A- B的值
(5a2-3b2)+[(a2+b2)-(5a2+3b2)],其中a=-1,b=1
— 9—(—3)
(—5)—5 (—3 )+(+8 )—(—5 )
(—5.3)+(—3.2)—(—2.5)—(+4.8) 15+(― )―15―(―0.25)
29 ×(-12)
25× ―(―25)× +25×(- )
12—(—18)+(—7)—15
,其中
-2 +|5-8|+24÷(-3)
……
…… ( ) (-24)
-22- (- )+(+3.5)+(- )
-(-89)+|-87|-23+[-75-(7)+76]-(10+39-24)
|-9.8|+(-4.6)-[8.7-(-1.3)]+(-5.4)-(-0.2)
[-(-84)+46]-|-9.1|+(+1.9)
[-(-90)+(-34)]-(+43)+(-57)+10
5+21+8/2-6-59
68/21-8-11-8+61
-2/9-7/9-56
4.6-(-3/4+1.6-4-3/4)
1/2+3+5/6-7/12
[2/3-4-1/4+(-0.4)]/1/3+2
22+(-4)+(-2)+4-3
-2+8-8-1/2+8/1/8
(2/3+1/2)/(-1/12)+(-12)
2/(-2)+0/7-(-8)-(-2)
(1/4-5/6+1/3+2/3)/1/2
18-6/(-3)+(-2)
(5+3/8-8/30/(-2)-3
(-84)/2+(-3)/(-6)
1/2-(-4/15)/2/3
(-5)-(+3)+(-9)-(-7)
(-5)+(+8)-(+2)-(-3)
5-(-3 )-(+7)-2
(-21)+(+16)-(-13)-(+7)+(-6)
2 -(- )+(-0.5)+(+2)-(+ )-2
(-7)-(+5)+(+3)-(-9)
-(+2 )-(-1 )-(+3 )
-14 5 (-3)=-12
-12 (-7) (-5) (-6)
23.33-(+76.76)
(-6-24.3)-(-12+9.1)+(0-2.1)
6+(7-8)
(-78)+25+26+27
(-3)+(-2)+(-1)
39+28+26-125
[2/3-4-1/4+(-0.4)]+1/3+2
22+(-4)+(-2)+4-3
(-2)+7-(-16)-(-3)
(-5)-(+3)+(-9)-(-7)
(-1/4)+(-5/6)-(-1/3)+2/3-1/6
2/3+(-1/2)-(-1/3)+1/4
(-5)+(-8)-(-2)-3
(-21)+(+16)-(-13)-(+7)+(-6)
(-2/3)+(-1/3)+3/4+(-1/4)
(-0.73)+(-0.62)-(+0.75)
(-19)+(-11)-(-33)+27
(-6.4)+(-3.6)-(-12.5)+4.5
(-81)+(-19)-27+33
(-3.2)-(-6.2)+(-5.1)+(-4.9)
(-6.9)+(-3.1)+(+2.7)+(-2.1) 有理数的加减混合运算 *是乘号.
[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)
5+21*8/2-6-59
68/21-8-11*8+61
-2/9-7/9-56
4.6-(-3/4+1.6-4-3/4)
1/2+3+5/6-7/12
[2/3-4-1/4*(-0.4)]/1/3+2
22+(-4)+(-2)+4*3
-2*8-8*1/2+8/1/8
(2/3+1/2)/(-1/12)*(-12)
(-28)/(-6+4)+(-1)
2/(-2)+0/7-(-8)*(-2)
(1/4-5/6+1/3+2/3)/1/2
18-6/(-3)*(-2)
(5+3/8*8/30/(-2)-3
(-84)/2*(-3)/(-6)
1/2*(-4/15)/2/3
-3x+2y-5x-7y
计算 写出计算过程
(-6)-(-7)+(-5)-(+9) 30.
(-5)×(-3 )-15×1 +〔 -( )×24〕
有理数的加减法混合运算
已知|a|=3.|b|=4,求a+b和a-b的值.
若|a|=5,|b|=19,且|a+b|=-(a+b),求a-b的值.
计算题:
23+(-73)
(-84)+(-49)
7+(-2.04)
4.23+(-7.57)
(-7/3)+(-7/6)
9/4+(-3/2)
3.75+(2.25)+5/4
-3.75+(+5/4)+(-1.5)
用简便方法计算:
(-17/4)+(-10/3)+(+13/3)+(11/3) (2)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)
[|-98|+76+(-87)]-23[56+(-75)-(7)]-(8+4+3)
-(-89)+|-87|-23+[-75-(7)+76]-(10+39-24)
|-9.8|+(-4.6)-[8.7-(-1.3)]+(-5.4)-(-0.2)
[-(-84)+46]-|-9.1|+(+1.9)
[-(-90)+(-34)]-(+43)+(-57)+10
5+21+8/2-6-59
68/21-8-11-8+61
-2/9-7/9-56
4.6-(-3/4+1.6-4-3/4)
1/2+3+5/6-7/12
[2/3-4-1/4+(-0.4)]/1/3+2
22+(-4)+(-2)+4-3
-2+8-8-1/2+8/1/8
(2/3+1/2)/(-1/12)+(-12)
2/(-2)+0/7-(-8)-(-2)
(1/4-5/6+1/3+2/3)/1/2
18-6/(-3)+(-2)
(5+3/8-8/30/(-2)-3
(-84)/2+(-3)/(-6)
1/2-(-4/15)/2/3
(-5)-(+3)+(-9)-(-7)
(-5)+(+8)-(+2)-(-3)
5-(-3 )-(+7)-2
(-21)+(+16)-(-13)-(+7)+(-6)
2 -(- )+(-0.5)+(+2)-(+ )-2
(-7)-(+5)+(+3)-(-9)
-(+2 )-(-1 )-(+3 )
-14 5 (-3)=-12
-12 (-7) (-5) (-6)
23.33-(+76.76)
(-6-24.3)-(-12+9.1)+(0-2.1)
6+(7-8)
(-78)+25+26+27
(-3)+(-2)+(-1)
39+28+26-125
[2/3-4-1/4+(-0.4)]+1/3+2
22+(-4)+(-2)+4-3
(-2)+7-(-16)-(-3)
(-5)-(+3)+(-9)-(-7)
(-1/4)+(-5/6)-(-1/3)+2/3-1/6
2/3+(-1/2)-(-1/3)+1/4
(-5)+(-8)-(-2)-3
(-21)+(+16)-(-13)-(+7)+(-6)
(-2/3)+(-1/3)+3/4+(-1/4)
(-0.73)+(-0.62)-(+0.75)
(-19)+(-11)-(-33)+27
(-6.4)+(-3.6)-(-12.5)+4.5
(-81)+(-19)-27+33
(-3.2)-(-6.2)+(-5.1)+(-4.9)
(-6.9)+(-3.1)+(+2.7)+(-2.1)
-9+5×(-6) -(-4)2÷(-8)
15+(― )―15―(―0.25)
—48 ×
(2m+2)×4m2
(2x+y)2-(2x-y)2 ( xy)2•(-12x2y2)÷(- x3y)
[(3x+2y)(3x-2y)-(x+2y)(3x-2y)]÷3x
先化简后求值:m(m-3)-(m+3)(m-3),其中m=-4.
4×(-3)2-13+(-12 )-|-43| -32 -[(-2)2 -(1- × )÷(-2)]2x-19=7x+31 - = 1
化简(求值) 的值,其中
先化简,再求值,已知a = 1,b = — ,求多项式 的值
-2 -(-3) ×(-1) -(-1) -1-(1-0.5)× ×[2-(-3) ]
11+(-22)-3×(-11)
-2(x-1)=4 -8x=3-1/2x
-(-6) -12-(1-0.5)×(-1 )×[2-(-3)2]
-23-3×(-2)3-(-1)4 (-
先化简,再求值: ,其中 ,
化简:
先化简,再求值: ,其中x=-2,y= .
2(x-2)+2=x+1 2x-13 -5x-16 =1
解方程: 解方程:
-22+22×[(-1)10+|-1|]
先化简,再求值: ,其中
化简求值.2xy2+[7x-3(2x-1)-2xy2]+y,其中 .
3 -2( -3 )
; ; ;+(-2)+︱-2-3︱-5 ( )÷( )÷(-0.25)
︱ ︱×( - )― × (-1) 2008
5.6-7+3.4
32÷[(-2)3-(-4)] 化简:-3(2x-5)+6x
(-14)-(-16)-(+6) 解方程:5(8-3x)=x
先化简,再求值: ,其中
当 时,求代数式 的值
3×(-4)+(-28) ÷7 4×(-3)2-15÷(-3)-50
先化简,再求值: 2x2+(-x2+3xy+2y2)-(x2-xy+2y2),其中x= ,y=3.
4x+3=2(x-1)+1
6x-7=4x-5
先化简,再求值:(5a+2a2-3+4a3)-(-a+4a3+2a2),其中a=1
先化简,再求值: ,其中
当 时,求代数式 的值.
化简求值: ,其中
(-8)+10+2+(-1) 5+(-6)+3+9+(-4)+(-7)
(-0.8)+1.2+(-0.7)+(-2.1)+0.8+3.5 +(- )+ +(- )+(- )
(-17)+59+(-37) (-18.65)+(-6.15)+18.15+6.15
(-4 )+(-3 )+6 +(-2 ) (-0.5)+3 +2.75+(-5 )
(-1.9)+3.6+(-10.1)+1.4 (-7)+(+11)+(-13)+9
33 +(-2.16)+9 +(-3 ) 49 +(-78.21)+27 +(-21.79)
先化简再求值:4 +(-2 +5 )-2(3 - ),其中 =-1,b=-
(-32+3)×[(-1)2008-(1-0.5× )]
-22×|-3|+(-6) ×(- )-|+ |÷(- )
3(-2x-5)+2x=9 2x- = -1
化简求值:2x2+(-x2+3xy+2y2)-2(0.5x2- xy+y2),其中x= ,y=3.
化简求值 ,其中x=-1,y=
(-3)2-2 3÷ ×3 -12-[2-(1- ×0.5)]×[32-(-2)2]
(1- + )×(-48) 2x+3=x-1
(3x+7)=2-1.5x - =1
80% •x =(x+22)•75%
先化简,再求值 ,其中
[15.25-13-(-14.75)]×(-0.125)÷ ( )÷
-1 [ 8×(-3)]×0-(-5) 6÷(-2) (-4)×
-14-(-2)3×5+0.25÷(- )2
-42× 3× 22÷4 -12-[2-(1- ×0.5)]×[32-(-2)2]
(- + - )×(-48)
15+(― )―15―(―0.25)
29 ×(-12) 25× ―(―25)× +25×(- )
(—5.3)+(—3.2)—(—2.5)—(+4.8) (—3 )+(+8 )—(—5 )
-2 +|5-8|+24÷(-3)
( ) (-24)
-22-
(- )+(+3.5)+(- )
3.6÷4.5-3×| - 19 |
(-3)×(-9)-8×(-5) -63÷7+45÷(-9)
-3×22-(-3×2)3 (-0.1)3-
-23-3×(-2)3-(-1)4 (-
[11×2-|3÷3|-(-3)2-33]÷ 2 )
2-7+4-3
4-(-2)3-33÷(-1) (-5)2×(- )÷(- )
(-2)2-(-1)3×( - )÷ - 25× -(-25)× -25×
1÷[(-2)2×0.52-(-2.24)÷(-2)3]-1 {4 +[-9×(+ )-0.8]}÷(-5 )
(-16)+(+27)+(+9)+(一24) (一5)+(一2)+(+9)一(一8)
(一3)×18+14 ;
; ;
(-24)×( - + )
-14-(-2)3×5+0.25÷(- )2
设A=2x +3x -x, B=4x +8x -2x+6,当x= 时,求A- B的值
(5a2-3b2)+[(a2+b2)-(5a2+3b2)],其中a=-1,b=1
— 9—(—3)
(—5)—5 (—3 )+(+8 )—(—5 )
(—5.3)+(—3.2)—(—2.5)—(+4.8) 15+(― )―15―(―0.25)
29 ×(-12)
25× ―(―25)× +25×(- )
12—(—18)+(—7)—15
,其中
-2 +|5-8|+24÷(-3)
……
…… ( ) (-24)
-22- (- )+(+3.5)+(- )
有道数学难题,-1 ,-12 ,12 ,3 列个有理数混合运算的式子,加,减,乘,除,乘方运算中至少有两种运算,是结果为
有理数的混合运算大约50道(包括加,减,乘,除,还有乘方)
初一有理数加,减,乘,除,乘方,绝对值混合运算40道(有难度的)
求5道加、减、乘、除的和乘方,有理数混合运算.\\
用实数3,9,根号5,-3,-6,2写出一个运算式子,使其至少含有加、减、乘、除、乘方、开方这6种运算中%
有理数的混合运算是指在一个算式里,含有加、减、乘、除、乘方运算中的( )运算.
3,4,-6,10算24点,运算范围(加,减.乘,除,乘方)
用java编写计算器 能够实现简单的加、减、乘、除、乘方、开方运算等;
在实数范围内,加、减、乘、除、乘方、开方运算总可以进行.
用运算符号(加,减,乘,除,乘方,开方)把( )或表示(
12,3,5,1运用加,减,乘,除,乘方运算怎样能算出24点
利用加、减、乘、除、乘方运算,每个数用一次,尽可能写出不同的算式.