a) 2 + 97 + 5 + 998 + 3 + 2995 = b) 113+124+1257+1376+1387+4743= c) 401+4502+4203+419+4018+4057= a) 99+5+998+3+2995=104+998+3+2995=1102+3+2995=1105+2995=4.100b)237+1257+1376+1387+4743=1494+1376+1387+4743=2870+1387+4743=4257+4734=8.991c) 4.903+4203+419+4018+4057=9.106+419+4018+4057=9.525+4018+4057=13.543+4057=17600
Unind pe dedesupt cifre pentru a forma zeci , am scris:
A) 2+998=100 , 97+3 = 100 , iar 5+2995=3000, adica --> 100+1000+3000=4100 b) 1370+6000+1500=8870 c) 820+8520+8260=17600
