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Teosim
a fost răspuns

149 dam +128 =?m 43000dm+128m=?m 25km+128m=?m 9hm -315dm=?dm 1800mm-315dm=?dm 2dam-315dm=?dm va roooooooooog ajutati-ma
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Răspuns :

Sebastian52
149dam+128=1490m +128=1618m
43000dm+128m=4300m+128m=4428m
25km+128m=25000m+128m=25128m
9hm-315dm=9000-315dm=8685dm
1800mm-315dm=18dm-315dm(este gresita)
2dam-315dm=200dm-315dm(ce este adunare sau scadere)