1+2+3+5.7
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1+2+3+5.71+2+3+5.71+2+3+5.711.7
1+2+3+5.7
1+2+3+5.7
1+2+3+5.7
11.7
1+2+3+5.7
计算下面各题:2-1/5-1/3-4/5 0.8+5/8+0.2 15-5÷16-11/16 25×5.7-5.7×24
简便计算:(1)4.56×0.27+4.56×0.63+0.456 (2)5.85+6.13+3.87-1.85 (3)12.5×5.7×8-5.7×90
比较每组数的大小:1又2/3和1又3/5.7/20和0.35
有理数的运算法怎么算?-1/2-(-1/3)+(-1/4)-4.2=5.7-8.4-2.3(-4.5)*1.25*(-8)
1.3.5.7.(32)2,4,6,8,(40).1,2,3,4,(20).5,6,7,8,)找规律
计算:(1)(-7)-9-(-3)+(-5) (2)-4.2+5.7-8.4+1计算:(1)(-7)-9-(-3)+(-5) (2)-4.2+5.7-8.4+10
求解几道计算题 -4.2+5.7-8.4+10 6.1-3.7-4.9+1.8 1/3-2/3+1 (-1/4)+5/6+2/3-2/1
3)+(-3.2)-(-2.5)-/-5.7/
3)+(-3.2)-(-2.5)-/-5.7/
-4.2+5.7-7.6+10.1-5.5 -[-52]+[-19]-[+37]-[-24]-4.2+5.7-7.6+10.1-5.5 [-0.5]-[-3又4分之1】+【+275】 -{+5又2分之1}-[-52]+[-19]-[+37]-[-24]
0.3+5.7-1=?
初中,有理数的加减法.(-7)-9-(-3)+(-5),-4.2+5.7-8.4+10,(-1.3)-(-3.2), -1/4+5/6+2/3-1/2要过程,拜托啦
求:-4.2+5.7-8.4+10 -1/4+5/6+2/3-1/2 12-(-18)+(-7)-15 4.7-(-8.9)-7.5+(-6)的简便算法!
-5.3-3.2+2.5-|-5.7|-1/2-26/5-1+16/5-4.5-7/3(+71/4)-(+6.25)-(-17/2)+(-0.75)-(+89/4)
判断 1、5.7×10.2=5.7×10+5.7×2=68.4 2、2.9×8×1.25=2.9×(8×1.25)运用了乘法交换律判断 3、0.25×9.9=0.25×10—0.25 4、3.2×2.5×12.5=(0.4×2.5)+(8×12.5) 5、0.3×0.4=0.2×0.6是用了乘法交换律
(-4.2)+5.7+(-8.4)+10 12-(-18)+(-7)-35 6.5+24-(-16)-6.8-3.2 (-1/4)+3又2/3+1/4+(-1又2/3)(-2又1/2)+(+5/6)-(+0.5)-(-1又1/6)
lim[1/3.5+1/5.7.+1/(2n-1)(2n+1)]