6.403 ÷ 8 = 0.800375 exactly.
This is 0.8 to the nearest tenth.
FYI, to round to the nearest tenth, look at the second number after the decimal point. If it is 5 or more then round the first number after the point up one e.g.. If the answer was 0.850375,you round up which is 0.9 to the nearest 10th.
If the second number after the decimal point is less than 5 (in this case) you round down to 0.8.
0.049
20.3922
0.4969
345.00 is already at the nearest tenth.
46.7 divided by 3.15 and round to the nearest tenth
0.089
0.6542
multiply or divide
.1
6.36
round 48.6 to the nearest tenth
Round 3.7416573 to the nearest tenth is 3.7