35 25 33 23 89 56 75 52 68 33 37 12 https //sites google com/view/tailieuhoidvier/d%E1%BB%8Bch v%E1%BB%A5 lau d%E1%BB%8Dn nh%C3%A0 t%E1%BA%A1i thanh h%C3%B3a s%E1%BA%A7m s%C6%A1n?authuser=0 60 – 30 =[.]
Trang 135
25
33
23
89 - 56
75 - 52
68 - 33
37 - 12
Trang 260 – 30 = ……
55 - 5 = …… 22 - 2 = …… 46 - 6 = ……
A
30 cm
? cm
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