-3/4+(-20.125)-6.5+1/8-(-0.75)
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-3/4+(-20.125)-6.5+1/8-(-0.75)-3/4+(-20.125)-6.5+1/8-(-0.75)-3/4+(-20.125)-6.5+1/8-(-0.75)先把分数都化成分数在
-3/4+(-20.125)-6.5+1/8-(-0.75)
-3/4+(-20.125)-6.5+1/8-(-0.75)
-3/4+(-20.125)-6.5+1/8-(-0.75)
先把分数都化成分数在做、、-3/4=0.75 1/8=0.125
-3/4+(-20.125)-6.5+1/8-(-0.75)
=-0.75-20.125-6.5+0.125+0.75
=-20.875-6.5+0.875
=-20-6.5
=-26.5
-26.5
请问你觉得哪里不理解?
-26.5
-26.5
=-0.75-20.125-6.5+0.125+0.75=-20.125-6.5+0.125=-20-6.5=-26.5
解题步骤:先把小数化成分数,再统一分母,后化简,解题就方便许多。
-3/4+(-20.125)-6.5+1/8-(-0.75)
=-3/4-161/8-13/2+1/8+3/4
=-6/8-161/8-52/8+1/8+6/8
=-212/8
=-53/2
完毕!
-3/4+(-20.125)-6.5+1/8-(-0.75)
-3/4+(-20.125)-6.5+1/8-(-0.75)-5.29+3.1-(-1.8)+(-0.1)-9.87
(-8)+10+2+(-1)-1+2-3-4+5-2/3+(-1/6)-(-1/4)-1/2-20+(-15)-(-17)--12-3/4+(-20.125)-6.5+1/8-(-0.75)-5.29+3.1-(-1.8)+(-0.1)-9.87
0.16+4÷(3/8-1/4)8/9+(1-3/4)×4/9 3.5×0.8+6.5×80%
计算:(0.25)^4*(-8)^3+[(-10/3)*2-4/13*(-6.5)+(-2)^4除以(-60)]/(-1/3^2)
计算:(0.25)^4*(-8)^3+[(-10/3)*2-4/13*(-6.5)+(-2)^4除以(-60)]/(-1/3^2)
几道计算题,1.(17/2-6.5*17/13)/(5.75+7/3+1/4)
9+6.5+4-1
1/4-1/2-1/8)*128 中括号9*(-4)中括号*(-1/4) 2.25*(-2.3)-3/25 (-2.1)*6.5*(-3/7)
1又3/4+(-6.5)+3又3/8+(-1.75)
1+4分之3+(6.5)+3又8分之3+(-1.75)+2又8分之5
1又4分之3 +(-6.5)+3又8分之3+(-1.75)+2又8分之5
6.3×(10-3又2分之一÷6.5)÷1又5分之4 等于多少?递等式计算,
一组数据3,8,4,a,1的平均数是6.5则这组数据的中位数是()
先化简比,再求比值.(1)3分之1:4分之1(2)6.5:2.6 (3)5千克:500克
(-3又2分之1)-(-4.5)+(-6.5)-(-2.5)3分之2+(-8分之1)-(-3分之1)+(-8分之3) -4分之1+6分之5+3分之2-2分之1
计算:1又4分之3+(-6.5)+3又8分之3+(-1.75)+(+2又8分之5)
0,-3分之1,3,0.2,4,6.5,-4又2分之1从小到大排列