Question

< 1.)Calculează: a)27m+45m=?m b)43m+27m=?m c)57m+27m=?n 83m-49m=?m 81m-43m=?m 62m-57m=? 25cm+37cm=?cm 45cm+47cm=?cm 46cm+36cm=? 381+ 271 =21 181+361=21 451+351-21 651-171=21 541-91=21 721-451=21 28h+37h=?h 53h-26h=?h 42h+28h=? 4h-68h=?h 58h-19h=7h 55h-48h=?​

Answer 1

Răspuns:

a) 72m, b) 70m, c) 84m...