44
Four hundredths, or 4 x 10-2
another way to write 15 x x y = 15x2y
x^-2
177788.5 x 2.
a x b x 102 = 102ab
2.09 x 10^2
That one, there!
6.4 x 106 or 6,400,000
4.1 x 107 = 41,000,000
4a + 3b where a and b are your numbers.
The 1 1 plus x can be another way to write HTC One X One X plus.
You call "a number" some variable name, for example "x", and then write:4 + x or: x + 4