Answer:
1.865
Explanation:
The number 1.8654's thousands place lies on the third number away from the decimal point to the right. the 2nd number away is the hundreds place, and the number right after the decimal point is the ones. This goes both ways, for numbers without decimals and for numbers with decimals.
for 1.8654, we need to end the number at the digit 5. But, first we need to decide whether to round 5 to 6 or to keep it as is.
To determine this, we look at the digit after it, which is 4.
So looking at 54, do we round this up or down? For greater than 5 we round up, for less than 5 we round down. If it's equal to 5, you can round either way but its commonly rounded up.
So here 54 is rounded down to 50
So our rounded number is 1.865
Hope this helps :)