a]

17,9 7,19 9,71

bài giải

chiều rộng của mảnh vườn hình chữ nhật là :

130 : 2 = 65 [ m ]

chiều dài của mảnh vườn hình chữ nhật là :

130 + 65 = 195 [ m ]

đáp số : chiều rộng : 65 m

chiều dài : 135 m

a] 8,01 ; 8,071 ; 7,18 ; 7,801 b] 7,8

a] < b] > c] =

a] 4 5/6 b] 2 3/8

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