Question

70,491+9,08+3,012+6,3

Answer 1

70,491+9,08+3,012+6,3=89,333
1) 70,491+9,08=80,021
2) 80,021+3,012=83,033
3) 83,033+6,3=89,333

Answer 2

70,491+9,08+3,012+6,3=(70,491+3,012)+(9,08+6,3)=73.503+15,38=88,883