Question

Tính:

87m 23dm : 2                         19dm 8cm : 3

9m 8dm 7cm : 3                      36m 8dm 7cm : 3

90dm 30cm : 10

Answer 1

87 m 23 dm = 87 x 10 + 23 (dm) = 893 (dm) 

893 : 2 (dm) = 446,5 (dm) 

_______

19 dm 8 cm = 19 x 10 + 8 (cm) = 198 cm 

 198 : 3 (cm) = 66 (cm) 

_______

9 m 8 dm 7 cm = 9 x 100 + 8 x 10 + 7 (cm) = 987 (cm) 

987 : 3 (cm) = 329 (cm) 

________

36 m 8 dm 7 cm = 36 x  100 + 8 x 10 + 7 (cm) = 3687 (cm)

3687 : 3 (cm) = 1229 (cm) 

________

90 dm 30 cm = 90 x 10 + 30 (cm) = 930 (cm)

930 : 10 (cm) = 93 (cm)