Question

9. Subtract the sum of the predecessor of the largest 4-digit number and the successor of the
number from the sum of the predecessor of the largest 7-digit number and the successor
3-digit number
​

Answer 1

predecessor of the largest 4-digit number = 9999-1 = 9998

the successor of thenumber = 9999+1=10000

sum =; 10000 +9998 = 19998.

ppredecessor of the largest 7-digit number = 9999999 -1 = 9999998

the successor 3-digit number = 999+1 =1000

sum = 9999998+ 10000 = 10000998

subtract = 9981000