Question

Round 7.778 to one decimal place

Answer 1

7.8

Explanation:

1) Understand how to round with the significant digit rule

Anything above a 5, you round to the next number

ie. 7 --> 8

2) So if you were to round only one decimal place, that would be 7.8

Answer 2

Answer: 7.8

Step-by-step explanation: Rounding off to one decimal place, the number after the decimal happens to be 7 i.e. 7.7... look out for the next number next to seven which happens to be another 7.

Since the next 7 is more than 5, by law you round it off to 1 and add to the first seven.

Hence our answer becomes 7.8