456+79-56-79=456-56=400
108+『66+92+224』=(108+92)+(224+66)=200+300=500
274+87-74-87=274-74=200
3600÷48=3600÷12÷4=75
397x101-397=397x100+397x1-397=39700
6500÷{65x25}=6500÷(6500÷100x4)=25
456+79-56-79=456-56=400
108+『66+92+224』=(108+92)+(224+66)=200+300=500
274+87-74-87=274-74=200
3600÷48=3600÷12÷4=75
397x101-397=397x100+397x1-397=39700
6500÷{65x25}=6500÷(6500÷100x4)=25