a).
X=36
1/2=36:2=18
2/3=36:3=12×2=24
3/4=36:4=9×3=27
X=324
1/2=324:2=162
2/3=324:3=108×2=216
3/4=324:4=81×3=243
b).
X=480
Jumătate =480:2=420
Un sfert =480:4=120
Zecime=480:10=48
X=840
Jumătate = 840:2=420
Sfert = 840:4=210
Zecime=840:10=84
SPER CA TE-AM AJUTAT!!
In caz ca am greșit la vreun calcul, imi cer scuze!
