+118723 $$9.1\times 10^{-2}$$
alright, the power is -2
so you have to move the decimal point 2 places. The negative sign means that you have to move it in the correct direction so that the answer gets smaller.
so you jump the point over the 9 and then over the invisable 0 and you get $$.091$$ I think it is a good idea to put a zero in front of the decimal point so that it is easier to read so I would leave the answer as
$$0.091$$
Does that all make sense.
+130511 $${\mathtt{9.1}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{-{\mathtt{2}}} = {\frac{{\mathtt{91}}}{{\mathtt{1\,000}}}} = {\mathtt{0.091}}$$
+118723 $$9.1\times 10^{-2}$$
alright, the power is -2
so you have to move the decimal point 2 places. The negative sign means that you have to move it in the correct direction so that the answer gets smaller.
so you jump the point over the 9 and then over the invisable 0 and you get $$.091$$ I think it is a good idea to put a zero in front of the decimal point so that it is easier to read so I would leave the answer as
$$0.091$$
Does that all make sense.
