0.46x6又11/25+3.56除以2又2/9求求各位高年级师哥 已经45分了 呵呵

456.44

= 0.46 x 161/25 + 3.56 / (20/9) 6又11/25=(6x25+11)/25=161/25, 2又2/9=20/9
= 0.46 x 161/25 + 3.56 x 9/20
= 0.46 x 161 x 4 / (25x4) + 3.56x9x5/(20x5)
= 0.46x644/100 + 17.8x9/100
= (0.5 - 0.04)x644/100 + 17.8x(10-1)/100
= (322 - 25.76)/100 + (178 - 17.8)/100
= 296.24/100 + 160.2/100
= 356.44/100
= 3.5644

0.46×161/25+3.56÷20/9=4.5644 有点屈才

4.5644

0.46*161/25+3.56*9/20
=23/50*161/25+89/25*9/20
=11411/2500
=4.5644

0.46即23/50
6又11/25即 161/25
3.56即 89/25
2又2/9即 20/9 除以2又2/9即乘以 9/20
上式是
23/50*161/25+89/25*9/20
= 46/100*161/25+89/25*45/100
=(46*161+45*89)2500
=11411/2500
=4.5644

0.46x6又11/25+3.56除以2又2/9=(46/100) *( 644/100)+(356/100) / (20/9)
==(46/100) *( 644/100)+(356/100)*(45/100)
=2.9624+1.602
=4.5644