What is 842.121 rounded to the nearest tenth

842.1

Step-by-step explanation:

If a number has a decimal point , then the first digit to the right of the decimal point indicates the number of tenths.

So, Number = 842.121

So, according to definition tenth place digit is 1 i,e, 842.121

The last figure kept should be unchanged if the first figure dropped is less than 5.

The last figure kept should be increased by 1 if the first figure dropped is greater than 5.

So, 842.121 rounded nearest to tenth = 842.1

Hence 842.121 rounded to the nearest tenth is 842.1