1/2 ,0.5,3/8,0.25,5/32 ( ) A:3/32 B:7/64 C:0.125 D:0.625
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1/2,0.5,3/8,0.25,5/32()A:3/32B:7/64C:0.125D:0.6251/2,0.5,3/8,0.25,5/32()A:3/32B:7/64C:0.125D:0.6251/
1/2 ,0.5,3/8,0.25,5/32 ( ) A:3/32 B:7/64 C:0.125 D:0.625
1/2 ,0.5,3/8,0.25,5/32 ( ) A:3/32 B:7/64 C:0.125 D:0.625
1/2 ,0.5,3/8,0.25,5/32 ( ) A:3/32 B:7/64 C:0.125 D:0.625
A
1/2 2/4 3/8 4/16 5/32 6/64
C
分数跟小数分开看
分数,1/2,3/8,5/32,分子13579....分母乘以四
小数,0.5,0.25,0.125,0.0625,.....除以二
条件:1/2,2/4,3/8,4/16,5/32,6/64
分子是从1到n
分母是2n(2,4,8,16,32,64)
所以答案为6/64,即3/32,选A
A.
都化成分数:1/2,2/4,3/8,4/16,5/32,下一个就是6/64,就是A了~
1/2 ,0.5,3/8,0.25,5/32 ( ) A:3/32 B:7/64 C:0.125 D:0.625
-1-(0.5-2/3)除1/3*[-2-(-27)|1/8-0.25|=
(1)5.57-[(-3/8)+(0.5)-(-5/6)+4又2/3]-1/8 (2)0.25+2(1)5.57-[(-3/8)+(0.5)-(-5/6)+4又2/3]-1/8(2)0.25+2又1/4+3.75-1又1/2-3又1/4(3)3又1/2-(-5又1/4)+(-3又1/3)-0.25+1/6(4)4.3+(-2又4/5)-(
(-2/3)*(-8/5)/(-0.25)
(0.5+0.25+0.125)/(0.5*0.25*0.125)*7/18*9/2+1/6/131/3-15/4*16/5
(-2/3)+0.25-1/6-0.5
1-(0.5-4/9)*3*{-2-(-27)}-|1/8-0.25|
1+2+3+5+8+9+0.5+0.5=
(-2/3)÷(-5/8)÷(-0.25)2X(-5)+2的3次方-3÷1/2 -1的5次方-(1-0.5)X1/3-【2-(-3)的二次方】 要过程
计算 :|-7.375+4.5|-|-18.25|+|-6-0.5|计算 :|-7 3/8+4 1/2|-|-18 1/4|+|-6-1/2|原式=-7 3/8+4 1/2-18 1/4+6+ 1/2=(-7+6+4-18)+(0.5+0.5)+(-0.375-0.25)=-15+1-5/8=-14 5/8回答:(1)上述解答过程是否有错误?_____________________________(
—0.25+(5/6)+(2/3)-0.5=多少?
填运算符号和括号(1)1 2 3 4 5 6 7 8 9=100(2)1 2 3 4 5 6=30(3)0.1 0.2 0.3 0.4 0.5=0.25
求1/2x^2-1/4x+0.2x^3+0.25x-0.5x^2-1/5x^3+0.5x-1 其中x=12/13
求1/2x^2-1/4x+0.2x^3+0.25x-0.5x^2-1/5x^3+0.5x-1 其中x=12/13
把比例式改成等积式.2:3 = 3:4.5( ) 3/5:1/5 = 3/7:1/7( )1/2:1/4 = 1/4:1/8( ) 4:6 = 12:18( )0.25:0.5 = 24:48( ) 3/8 = 9/24( )1.25/0.25 = 4/0.8( ) 0.4/25 = 1.2/75
2、求下面各比的比值 32:48 2:0.25 1/2:5/6 4:1/31、 化简下列比 8/5:2/3 4.5:2.7 12:16 2:0.5
计算(加减乘除)一.(-5/7)+1.4二.3/2-[(-1.5)+0.5]三.(-7.75)-(-3.5)(+0.75)-(-8.5)四.1/5*1/2*(-15)+7*(-1/2)五.-3*4+12*(1/3-5/2)六.(-8)/ 4*(-3)七.1/6 / (-4/3)/(-0.25)八.(-1.6)*0.4 / (-0.5)九.(-3/4)*(-1.5)/(-2.
数字推理:一、157,65,27,11,5,( )二、2,3,13,175,( )三、1,10,31,70,133,( )四、1/2,0.5,3/8,0.25,5/32,( )将括号中的数字填上