Question

A 2- digit number was rounded off to the nearest ten and the result was 80. find the interval of the original number​

Answer 1

Answer:

intervals of the number

1. the unit digit of the number can be either greater than give it less then five .

2. if the unit digits it less than 5 ,then tens digits must be five.

3.if the unit digits is greater than five ,the tens digits must be six.

hence,the number can range from 56 to 64

Step-by-step explanation: