5.6乘0.45
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/21 12:33:51
再问:验算再问:验算再答: 再问:太谢谢你了!再答:好好学习
9*2*0.45=9*0.9=8.1
5.6×8.8+0.56×12=5.6×8.8+5.6×1.2=5.6×(8.8+1.2)=5.6×10=56
8.4再答:0.84
再答:谢谢
设那数为X0.27*5.6+5.6X+5.6*0.25=0.78*0.565.6*(0.27+X+0.25)=0.078*5.60.52+X=0.078X=-0.442
1、3.75×4.8+62.5×0.48=3.75×4.8+6.25×4.8=4.8×(3.75+6.25)=4.8×10=482、(4.8*7.5*8.1)/(2.4*2.5*2.7)=(4.8/2
0.45*72+45*0.18+45=45*0.72+45*0.18+1*45=45*(0.72+*0.18+1)=45*1.9=45*(2-0.1)=45*2-45*0.1=90-4.5=85.5
0.54*2.08+5.6*0.208一0.208=0.54*0.208+5.6*0.208—0.208*1=(0.54+5.6—1)*0.208=2.08这是我在静心思考后得出的结论,如果不能请追问
太简单了!就是0.45乘5.6加4.5乘0.54减0.54=0.45乘5.6加0.45乘5.4减0.54=0.45乘(5.6加5.4)减0.54=0.45乘11减0.54=4.95减0.54=4.41
5、6*37+5、6*63再答:接着会了吧
5.6+7.8+4.4=5.6+4.4+7.8=10+7.8=17.82.5x12.5x8x0.4=(2.5x0.4)x(12.5x8)=1x100=10015.8-7.32-2.68=15.8-(7
4.5×0.9+0.45×11=4.5×0.9+4.5×1.1=(0.9+1.1)×4.5=2×4.5=9
28×221.6﹣28×16=28×﹙221.6-16﹚=28×205.6=5756.85.6×1.7﹢0.5×83=0.5×11.2×1.7+0.5×83=0.5×﹙19.04﹢83﹚=0.5×10
简便6.84乘5.5加68.4乘0.45=6.84×(5.5+4.5)=6.84×10=68.4;还有6.7乘4.3加6.7乘6.7减6.7快=6.7×(4.3+6.7-1)=6.7×10=67;很高
6.3再问:哦
解题思路:考查幂的运算解题过程:解:(1)第一次撕成2片,即21;第二次撕成4片,即22;....所以第n次撕成2n,则2n=64所以n=6所以要把这张纸撕成64片需要6次(2)撕7次后这张纸变成27