53 dam - 40 m = ...m 92 m - ( 21 hm + 65cm + 20mm) =...mm 62 km + 12 hm + 3 dam = ...dam

1. 53dam-40m
= 530m-40m
=490 m
2. 92m-(21hm+65cm+20mm)
= 92000mm -(2100000mm+650mm+20mm)
=92000mm-2100670mm
= -2008670mm
3. 62km+12hm+3dam
= 6200dam+120dam+3dam
= 6323dam

1) 53 dam - 40 m = m
53 dam = m (53 × 10 = 530 )
530 - 40 = 490
2) 21 hm = mm ( 21 × 100.000 = 2.100000
63 cm = mm (65 × 10 = 650
92 m = mm ( 92 × 1000 = 92000
jdi 92000- (2.100.000 + 650 + 20)
92000 - 2.100.670 = -2008670 mm
3) 62 km = dam (62× 100 = 6200
12 hm = dam (12× 10= 120
6200 × 120 + 3 = 6323 dam