To express the decimal 0.004 as a fraction, we start by understanding the place value of the number. The decimal 0.004 can be read as ‘four thousandths’ since it is in the thousandths place.
We can write this as:
0.004 = 4/1000
Next, we simplify the fraction. Both 4 and 1000 can be divided by 4:
4 ÷ 4 = 1
1000 ÷ 4 = 250
So, the simplified form of the fraction is:
1/250
Therefore, 0.004 expressed as a fraction is 1/250.