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Alinaperescu
a fost răspuns

Calculeaza:
a) 180 dam + 320 dam = ?m
1000 m - 50 dam = ? dam
6 * 250 dam = ? dam ? = ?hm
b) 4 m + 32 dm = ? dm
42 m - 30 dm = ? m
6 * 220 dm = ? dm = ? m
c) 17 dm + 19 cm = ? cm
415 dm - 70 cm = ? dm
800 mm : 2 = ? mm = ? cm
Primul exercitiu

Răspuns :

Alecrainic
a) 180dam+320dam=500dam=5000m
1000m = 100 dam => 100dam-50dam=50dam
6*250dam=1500dam=150hm

b) 4m=40dm => 40dm+32dm=72dm
30dm=3m => 42m-3m=39m
6*220dm=1320dm=132m

c) 17dm=170cm => 170cm+19cm=189cm
70cm=7dm => 415dm-7dm=408dm
800mm:2=400mm=40cm.

Alte intrebari