72除8乘以4
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5/3+0.72=1.3211/8除以4=11/220乘以20%=42--7/3+7/4=2又7/12.4乘以0.1%=0.002413除以1%等于=13000.3乘以0.3=0.095乘以3/1除以
486-23乘以16=486-368=118;2.5乘以3.2乘以1.25=2.5×0.4×8×1.25=1×10=10;3.5乘以2.6减4.5=9.1-4.5=4.6;7减5分之4除以2减5分之3
(1)(8/9+1/3)×72%=11/9×18/25=22/25.(2)3/4÷(75%+1/4)=3/4÷1=3/4.(3)0.625×5.6+4.3×5/8+0.1×62.5%=0.625×(5
5分之2÷(负的5分之12)一21分之8×(负的4分之7)减去O.25=-1/6+2/3-1/4=1/2-1/4=1/4
10除9除8除7除6除5除4除3除2=2除以3除以4除以5除以6除以7除以8除以9=(2/3)/(3x4x5x6x7x8x9)=2/3)/(2520x72)=1/(2520x108)
36×8÷36×8=36÷36×(8×8)=1×64=64
(1+1-2)X3/4X5+6又7分之8加9=0+50/7+9=113/7最好用代数式写清楚有问题继续追问
AXB=260AX2B=2AB=2X260=5203AXB=3X260=780AXB/2=260/2=130A/4XBX4=AXB=260
用倒推法,从得数2往前推(2*10-8+52)/(1-1/3)*7/(3+3*3/4)=64/(2/3)*7/(21/4)=96*7/(21/4)=128这个数是128
1/8x25x1/4x21=525/32
1/8再问:图片再答:
是除以吧,2,3,4,5,6,7,8,9,10的最小公倍数减1,2519,也许会算错,但是方法绝对不错
4X*10=0.3X*0.1+840x=0.03x+839.97x=8x=8/39.974X乘以10=(4*10)x=40x0.3X除0.1=(0.3/0.1)x=3x4X*10=0.3X/0.1+8
320×(-0.25)-147×(-0.125)+253×1/8+72×(-1/4)=-80+18.375+31.625-8=-38
是原来商的32倍
100—72×25÷24=100—72÷24×25=100—3×25=25欢迎随时提问.望采纳,谢谢!
一:3.06÷0.25x8=0.306再答:二2.5x0.4x2.5÷4=1.25再答:求采纳
(8-2.3÷4.6)×6=(8-0.5)×6=8×7.5=60