54.4+0.16等于多少

虞达栋52120.4*0.4等于多少? -
芮金种19159263341 ______ 这是一道小数乘法:0.4*0.4=0.16

虞达栋52120.16+0.16为何等于49/150
芮金种19159263341 ______ 是=48/150吧 0.16+0.16=32/100 =16/50 =48/150

虞达栋521216/54.4=? -
芮金种19159263341 ______ 约等于0.294 如果是分数表示的话为5/17

虞达栋52120.25*1.25*0.16等于多少用脱式计算 -
芮金种19159263341 ______ 0.25*1.25*0.16=0.25*1.25*(0.4*0.4)=(0.25*0.4)*(1.25*0.4)=0.1*0.5=0.05

虞达栋52120.1616.+0.16等于多少?结果用分数急 -
芮金种19159263341 ______[答案] 设x=0.1616(循环) 100x=16.1616(循环) 99x=16 ∴x=16/99 0.1616..+0.16 =16/99+4/25 =796/2475

虞达栋52125.78+1.2 - 6.8等于多少简便计算 -
芮金种19159263341 ______ 解:5.78+1.2-6.8=6.98-6.8=(7-0.02)-6.8=7-6.8-0.02=0.2-0.02=0.18

虞达栋52129.5%加2.1%加9.75%加0.16%等于百分之多少 -
芮金种19159263341 ______ 解:9.5%加2.1%加9.75%加0.16%=(9.5+2.1+9.75+0.16)%=21.51%9.5%加2.1%加9.75%加0.16%等于百分之21.51

虞达栋521245%*8.4+1.6*11/20等于好多 -
芮金种19159263341 ______ 45%*8.4+1.6*11/20=0.45*8.4+1.6*0.55=0.45*8.4+1.6*(0.45+0.1)=0.45*8.4+1.6*0.45+0.16=0.45*(8.4+1.6)+0.16=4.5+0.16=4.66

虞达栋52120.16等于25分之4等于2除以几等于8:几等于百分之多少 -
芮金种19159263341 ______ 0.16等于25分之4等于2除以(12.5)等于8:(50)等于百分之(16); 0.16=4/25=2/12.5=8:50=16%

虞达栋52120.1+0.2+0.3+...+0.8+0.9+0.12+0.14+0.16+...+0.88 =等于多少, -
芮金种19159263341 ______[答案] 0.1+0.2+0.3+...+0.8+0.9+0.12+0.14+0.16+...+0.88 = ﹙ 0.1+0.9﹚*9/2+﹙0.12+0.88﹚*39/2 =4.5+19.5 =24