有理数加减混合运算20题
附答案。不要乘除乘方,最好分数小数绝对值都包括,明天交的作业,一定要有答案。老师让自判。让大家帮我找题,不是问你们怎么解,快啊,这点还有在线的吗...
附答案。不要乘除乘方,最好分数小数绝对值都包括,明天交的作业,一定要有答案。老师让自判。
让大家帮我找题,不是问你们怎么解,快啊,这点还有在线的吗 展开
让大家帮我找题,不是问你们怎么解,快啊,这点还有在线的吗 展开
5个回答
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没答案,自己算!
(一)计算题:
(1)(-4)(+6)(-7) (2)(-27)(-25)(-3)(-4) (3)0.001*(-0.1)*(1.1) (4)24*(-5/4)*(-12/15)*(-0.12) (5)(-3/2)(-4/3)(-5/4)(-6/5)(-7/6)(-8/7) (6)(-24/7)(11/8+7/3-3.75)*24
(二)用简便方法计算:
(1)(-71/8)*(-23)-23*(-73/8) (2)(-7/15)*(-18)*(-45/14) (3)(-2.2)*(+1.5)*(-7/11)*(-2/7) (三)当a=-4,b=-3,c=-2,d=-1时,求代数式(ab+cd)(ab-cd)的值.
-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
1.455*(38/5)+111/(5/96)+43.3*76
2.(18/5)*(127/5)+37.9*(32/5)
3.[61-(11.9+6.4)*0.5]/5.185
4.137.4*125-56.4*125-125
5.3.78+(3.78*2+3.78*2)*25
6.0.5*[9.9-(10-0.56/5.6)]
7.4.32+[(28.4-25.9)*0.5]/0.1
8.0.04-1.44/3.6*0.01
9.5.43+(8.1-7.2/1.6)*0.25
10.[90-(8.25/0.6+1.25)]*0.01
(1) 3乘(-4)+(-28)除(-7)
(2) -2的4次方+(3—7)的平方—2
(3) 0-(-3)的平方除3乘(-2)的3次方减1/4
(4) -1的4次方减1/6乘[2-(-3)的平方]
(5)(-1)的平方+(-1)的3次方+....+(-1)的2004次方
这下面的有答案
39+[-23]+0+[-16]= 0
[-18]+29+[-52]+60= 19
[-3]+[-2]+[-1]+0+1+2= -3
[-301]+125+301+[-75]= 50
[-1]+[-1/2]+3/4+[-1/4]= -1
[-7/2]+5/6+[-0.5]+4/5+19/6= 1.25
[-26.54]+[-6.14]+18.54+6.14= -8
1.125+[-17/5]+[-1/8]+[-0.6]= -3
[-|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
(一)计算题:
(1)(-4)(+6)(-7) (2)(-27)(-25)(-3)(-4) (3)0.001*(-0.1)*(1.1) (4)24*(-5/4)*(-12/15)*(-0.12) (5)(-3/2)(-4/3)(-5/4)(-6/5)(-7/6)(-8/7) (6)(-24/7)(11/8+7/3-3.75)*24
(二)用简便方法计算:
(1)(-71/8)*(-23)-23*(-73/8) (2)(-7/15)*(-18)*(-45/14) (3)(-2.2)*(+1.5)*(-7/11)*(-2/7) (三)当a=-4,b=-3,c=-2,d=-1时,求代数式(ab+cd)(ab-cd)的值.
-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
1.455*(38/5)+111/(5/96)+43.3*76
2.(18/5)*(127/5)+37.9*(32/5)
3.[61-(11.9+6.4)*0.5]/5.185
4.137.4*125-56.4*125-125
5.3.78+(3.78*2+3.78*2)*25
6.0.5*[9.9-(10-0.56/5.6)]
7.4.32+[(28.4-25.9)*0.5]/0.1
8.0.04-1.44/3.6*0.01
9.5.43+(8.1-7.2/1.6)*0.25
10.[90-(8.25/0.6+1.25)]*0.01
(1) 3乘(-4)+(-28)除(-7)
(2) -2的4次方+(3—7)的平方—2
(3) 0-(-3)的平方除3乘(-2)的3次方减1/4
(4) -1的4次方减1/6乘[2-(-3)的平方]
(5)(-1)的平方+(-1)的3次方+....+(-1)的2004次方
这下面的有答案
39+[-23]+0+[-16]= 0
[-18]+29+[-52]+60= 19
[-3]+[-2]+[-1]+0+1+2= -3
[-301]+125+301+[-75]= 50
[-1]+[-1/2]+3/4+[-1/4]= -1
[-7/2]+5/6+[-0.5]+4/5+19/6= 1.25
[-26.54]+[-6.14]+18.54+6.14= -8
1.125+[-17/5]+[-1/8]+[-0.6]= -3
[-|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
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解:原式=
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2+(-5)+1=
-8-7+5
6-7+2=
15+2+(-15)=
6-(-9)=
-4+12=
-8-11=
12-36=
-5+(-12)=
1+(-8)+16=
6-(+5)-14=
39-27+(-11)=
15-12-(-3)=
4+(-5)-(-7)=
1+2-5+(-4)=
2+2-(+8)-1=
8-5+(-14)=
34-12+(-5)=
15+12=
3-(+7)-1=
-8-7+5
6-7+2=
15+2+(-15)=
6-(-9)=
-4+12=
-8-11=
12-36=
-5+(-12)=
1+(-8)+16=
6-(+5)-14=
39-27+(-11)=
15-12-(-3)=
4+(-5)-(-7)=
1+2-5+(-4)=
2+2-(+8)-1=
8-5+(-14)=
34-12+(-5)=
15+12=
3-(+7)-1=
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(1)7.2-(-5)+83+(-0.7)
(2)8+(-6.45)-42+91
(3)(-20)+(+3)-(-5)-7
(4)(-8)+10+2-57
(5)5.9+8.4-(-78)+(-3.8)
(6)4.8-(-69)+6.5-(-77)
(7)(-8)-61-(31)+(-2.9)
(8)9.3+(-7.2)-(+3)+5.2
(9)(-5)+13-(-5.8)-(-54)
(10)(+13)-9.6+(-20)
(2)8+(-6.45)-42+91
(3)(-20)+(+3)-(-5)-7
(4)(-8)+10+2-57
(5)5.9+8.4-(-78)+(-3.8)
(6)4.8-(-69)+6.5-(-77)
(7)(-8)-61-(31)+(-2.9)
(8)9.3+(-7.2)-(+3)+5.2
(9)(-5)+13-(-5.8)-(-54)
(10)(+13)-9.6+(-20)
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