Kusikohnaask
a fost răspuns

Calculati:
a)2x13 cm +5x6 cm+123 cm=?cm
c)1,2 km-2,8 dam=?m
e)43000 mm-1200 cm-70 dm=?m
g)4x10^6 cm-18 hm=?km

Răspuns :

Mausmini118ask

a)2×13cm+5×6cm+123cm=26cm+30cm+123cm=179cm

c)1,2km-2,8dam=(1,2×100)dam=2,8dam=120dam-2,8dam

=117,2dam=(117,2×1000)cm=117.200cm

e)43.000mm-210dm=43m-21m=22m

g)4×10⁶cm-18hm=(4×10⁶10⁵)km-(18:10)km=40km-1,8km=38,2km

Sper ca ti-am fost de folos. Succes!

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