49999+4999+1999+499+49+5= (49999+1)+(4999+1)+(1999+1)+(499+1)+(49+1)= 50000 + 5000 + 2000 + 500 + 50= 57550382-98= 382 - 100 + 2= 282 + 2= 284 (215+357+429+581+625)-(205+347+419+571+615)= (215-205)+(3...