Tính: 4/5-1/2+1/3 1/2×1/4:1/6 5/12-7/32:21/16 2/9:2/9×1/2 31/08/2021 Bởi Lyla Tính: 4/5-1/2+1/3 1/2×1/4:1/6 5/12-7/32:21/16 2/9:2/9×1/2
a) `4/5-1/2+1/3` `= 3/10+1/3` `= 19/30` b) `1/2×1/4÷1/6` `= 1/8÷1/6` `= 3/4` c) `5/12-7/32÷21/16` `= 5/12-1/6` `= 1/4` d) `2/9÷2/9×1/2` `= 1×1/2` `= 1/12` Bình luận
@Học để làm gì? 4/5 – 1/2 + 1/3 =24/30 -15/30 + 10/30 =9/30 + 10/30 =19/30 1/2 x 1/4 : 1/6 =1/8 : 1/6 =6/8 =3/4 5/12-7/32:21/16 = 5/12 – 112/672 =5/12 – 2/12 =3/12 =1/4 2/9:2/9×1/2 =2/9 x 9/2 x 1/2 =18/18 x 1/2 =1 x 1/2 =1/2 #Study well Bình luận
a) `4/5-1/2+1/3`
`= 3/10+1/3`
`= 19/30`
b) `1/2×1/4÷1/6`
`= 1/8÷1/6`
`= 3/4`
c) `5/12-7/32÷21/16`
`= 5/12-1/6`
`= 1/4`
d) `2/9÷2/9×1/2`
`= 1×1/2`
`= 1/12`
@Học để làm gì?
4/5 – 1/2 + 1/3
=24/30 -15/30 + 10/30
=9/30 + 10/30
=19/30
1/2 x 1/4 : 1/6
=1/8 : 1/6
=6/8
=3/4
5/12-7/32:21/16
= 5/12 – 112/672
=5/12 – 2/12
=3/12
=1/4
2/9:2/9×1/2
=2/9 x 9/2 x 1/2
=18/18 x 1/2
=1 x 1/2
=1/2
#Study well