The answer is that I would try to find out what he understands about rounding and then explain the concept of rounding through examples that he can identify with.
In both cases, the nearest whole number is zero.
You round to the nearest whole number.
5.8 when rounded to the nearest whole number is 6 because .8 is greater than .5
It is to find a whole number which is a multiple of ten to give the nearest ten. The rounding could be to the nearest dozen (12), 25, 50, 100 or any convenient whole number.
56.0
Round the number to the nearest tenth.
Only if you were asked to find the mean to the nearest tenth. If so, don't round each number; calculate the mean first and then round it to the nearest tenth.
In both cases, the nearest whole number is zero.
You find the percentage equivalent and the round the result to the nearest whole number.
You round to the nearest whole number.
0.4
LM = 4 in LN = ? Find LN. Round the answer to the nearest tenth.
5.8 when rounded to the nearest whole number is 6 because .8 is greater than .5
0.640 to the nearest tenth is 0.6
29.3
A circle has a circumference of 110.6 mm. Find its diameter to the nearest tenth.
31,687,500 acres