a)117/130+183/610-1/5 b)823,48-530,34+77,52 c)53,94:9,3×2,05 giải hộ mik với ạ! 01/10/2021 Bởi Piper a)117/130+183/610-1/5 b)823,48-530,34+77,52 c)53,94:9,3×2,05 giải hộ mik với ạ!
`a,117/130+183/610-1/5` `=6/5-1/5` `=1` `b,823,48-530,34+77,52` `=293,14+77,52` `=370,66` `c, 53,94:9,3×2,05` `=5,8×2,05` `=11,89` Bình luận
a)$\frac{117}{130}$ + $\frac{183}{610}$ – $\frac{1}{5}$ = $\frac{117:13}{130:13}$ + $\frac{183:61}{610:61}$ – $\frac{1}{5}$ = $\frac{9}{10}$ + $\frac{3}{10}$ – $\frac{1}{5}$ = $\frac{6}{5}$ – $\frac{1}{5}$ = 1 b) 823,48 – 530,34 + 77,52 = ( 823,48 + 77,52 ) – 530,34 = 901 – 530,34 = 370,66 c) 53,94 : 9,3 x 2,05 = 5,8 x 2,05 = 11,89 Bình luận
`a,117/130+183/610-1/5`
`=6/5-1/5`
`=1`
`b,823,48-530,34+77,52`
`=293,14+77,52`
`=370,66`
`c, 53,94:9,3×2,05`
`=5,8×2,05`
`=11,89`
a)$\frac{117}{130}$ + $\frac{183}{610}$ – $\frac{1}{5}$
= $\frac{117:13}{130:13}$ + $\frac{183:61}{610:61}$ – $\frac{1}{5}$
= $\frac{9}{10}$ + $\frac{3}{10}$ – $\frac{1}{5}$
= $\frac{6}{5}$ – $\frac{1}{5}$
= 1
b) 823,48 – 530,34 + 77,52
= ( 823,48 + 77,52 ) – 530,34
= 901 – 530,34
= 370,66
c) 53,94 : 9,3 x 2,05
= 5,8 x 2,05
= 11,89