Question

efectueaza operatiile 2M 3cm+6m 7cm 3m 14cm+9m 7cm 3 dm 4cm+ 7m 6cm 5m 8dm-42cm 35dm-85cm 5km 400m 3m+5cm-2dm 8km+300m +20m 60 cm +4dm -30cm

Answer 1

2 m 3 cm + 6 m  7 cm  = 8 m 10 cm

3 m 14 cm + 9 m 7 cm = 12 m 21 cm

3 dm  4 cm +  7 m  6 cm  = 7 m 3 dm 10 cm 

5 m 8 dm - 42 cm 35 dm - 85 cm = 
=580 cm - 392 cm - 85 cm =
= 188 cm - 85 cm 
= 103 cm 

 5 km 400 m + 3 m 5 cm - 2 dm =
= 5 km 400 m 305 cm - 20 cm =
= 5 km 400 m 285 cm  

8 km + 300 m +20 m 60 cm + 4 dm - 30 cm=
=  8 km + 320 m 60 cm + 40 cm - 30 cm =
= 8 km 320 m 70 cm