(1),(+1.25)+(-1/2)+(-3/4)+(+1又3/4) (2),(-0.5)-(3又1/4)+2.75-(+7又1/2)(1),2又3/4+0.25-(-7又1/2)+(-2又1/4)-1.5-2.75(2),-12又1/3-[10又1/3+(-8又1/3)-3又2/3](3),如果|a|=3,|b|=1,求:
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![(1),(+1.25)+(-1/2)+(-3/4)+(+1又3/4) (2),(-0.5)-(3又1/4)+2.75-(+7又1/2)(1),2又3/4+0.25-(-7又1/2)+(-2又1/4)-1.5-2.75(2),-12又1/3-[10又1/3+(-8又1/3)-3又2/3](3),如果|a|=3,|b|=1,求:](/uploads/image/z/1070788-4-8.jpg?t=%281%29%2C%28%2B1.25%29%2B%28-1%2F2%29%2B%28-3%2F4%29%2B%28%2B1%E5%8F%883%2F4%29+%EF%BC%882%EF%BC%89%2C%EF%BC%88-0.5%EF%BC%89-%EF%BC%883%E5%8F%881%2F4%EF%BC%89%2B2.75-%EF%BC%88%2B7%E5%8F%881%2F2%EF%BC%89%EF%BC%881%EF%BC%89%EF%BC%8C2%E5%8F%883%2F4%2B0.25-%EF%BC%88-7%E5%8F%881%2F2%EF%BC%89%2B%EF%BC%88-2%E5%8F%881%2F4%EF%BC%89-1.5-2.75%EF%BC%882%EF%BC%89%EF%BC%8C-12%E5%8F%881%2F3-%EF%BC%BB10%E5%8F%881%2F3%2B%EF%BC%88-8%E5%8F%881%2F3%EF%BC%89-3%E5%8F%882%2F3%EF%BC%BD%EF%BC%883%EF%BC%89%EF%BC%8C%E5%A6%82%E6%9E%9C%7Ca%7C%EF%BC%9D3%EF%BC%8C%7Cb%7C%EF%BC%9D1%EF%BC%8C%E6%B1%82%EF%BC%9A)
(1),(+1.25)+(-1/2)+(-3/4)+(+1又3/4) (2),(-0.5)-(3又1/4)+2.75-(+7又1/2)(1),2又3/4+0.25-(-7又1/2)+(-2又1/4)-1.5-2.75(2),-12又1/3-[10又1/3+(-8又1/3)-3又2/3](3),如果|a|=3,|b|=1,求:
(1),(+1.25)+(-1/2)+(-3/4)+(+1又3/4) (2),(-0.5)-(3又1/4)+2.75-(+7又1/2)
(1),2又3/4+0.25-(-7又1/2)+(-2又1/4)-1.5-2.75
(2),-12又1/3-[10又1/3+(-8又1/3)-3又2/3]
(3),如果|a|=3,|b|=1,求:(1)|a-b|的值 (2)若a>b,求a+b的值
(4),计算:(+1)+(-2)+(+3)+(-4)+......+(+99)+(-100)
(5),(-27)/9
(6),-0.125/8/3
(7),(-0.91)/(-0.13)
(8),(-23)/(-3)*1/3
(1),(+1.25)+(-1/2)+(-3/4)+(+1又3/4) (2),(-0.5)-(3又1/4)+2.75-(+7又1/2)(1),2又3/4+0.25-(-7又1/2)+(-2又1/4)-1.5-2.75(2),-12又1/3-[10又1/3+(-8又1/3)-3又2/3](3),如果|a|=3,|b|=1,求:
(1),(+1.25)+(-1/2)+(-3/4)+(+1又3/4)
=1.25-0.5-0.75+1.75
=0.75-0.75+1.75
=1.75
(2),(-0.5)-(3又1/4)+2.75-(+7又1/2)
=-0.5-3.25+2.75-7.5
=(-0.5-7.5)+(2.75-3.25)
=-8-0.5
=-8.5
(1)原式=5/4-2/4-3/4+7/4=7/4;(2)原式=-2/4-13/4+11/4-30/4=-8.5
1.75
1),(+1.25)+(-1/2)+(-3/4)+(+1又3/4)
=1.25-0.5-0.75+1.75
=0.75-0.75+1.75
=1.75
2又3/4+0.25-(-7又1/2)+(-2又1/4)-1.5-2.75
(2),-12又1/3-[10又1/3+(-8又1/3)-3又2/3]
(3),如果|a|=3,|b|=1,求:(1)|a-b|的值 (2)若a>b,求a+b的值
(4),计算:(+1)+(-2)+(+3)+(-4)+......+(+99)+(-100)
(5),(-2...
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2又3/4+0.25-(-7又1/2)+(-2又1/4)-1.5-2.75
(2),-12又1/3-[10又1/3+(-8又1/3)-3又2/3]
(3),如果|a|=3,|b|=1,求:(1)|a-b|的值 (2)若a>b,求a+b的值
(4),计算:(+1)+(-2)+(+3)+(-4)+......+(+99)+(-100)
(5),(-27)/9
(6),-0.125/8/3
(7),(-0.91)/(-0.13)
(8),(-23)/(-3)*1/3
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