The number in the middle is the one you are going to start with so 48-10=38 so 38 goes in 10 less for the first number and 48+10=58 so 58 goes in 10 more for the first number ,for the second number the answers are in 10 less its going to be 73 and for 10 more its going to be 93 for the third number it will be 18 in the middle and and 28 in 10 more finally for number four 27 is going to go on 10 less and 37 will be on the middle
