It is 2.5/(10*10*10*10) or 2.5*0.0001
You evaluate the powers of 10 and a exponent of positive 4.
That means that powers are used in which the base is 10. It is also implied that the exponent is an integer.
(3 x 100) + (2/10^1) + (9/10^2)
2.5 * 101, or just 2.5 * 10
Expanded Notation of 1,294 = (1 x 1,000) + (2 x 100) + (9 x 10) + (4 x 1)
81.402 in expanded form using the powers of ten = (8 x 10^1) + (1 x 10^0) + (4/10^1) + (0/10^2) + (2/10^3)
You evaluate the powers of 10 and a exponent of positive 4.
That means that powers are used in which the base is 10. It is also implied that the exponent is an integer.
820.681+10
(3 x 100) + (2/10^1) + (9/10^2)
For powers of ten, the exponent indicates how many times ten is used as a factor or how many zeros happen after the one. 106 = 10 x 10 x 10 x 10 x 10 x 10 = 1,000,000
2.5 * 101, or just 2.5 * 10
Expanded Notation of 1,294 = (1 x 1,000) + (2 x 100) + (9 x 10) + (4 x 1)
The exponent in this case is the small number written in superscript (raised) to the right of the 10.
1,000,000 as a power of ten would be 106. A simple way to convert numbers to powers of ten would be to count the zeros - the number you get is the same number as the exponent.
The exponent indicates how many spaces to move the decimal point to the right (+) or to the left (-) when expanded.
81.402 = (8 x 10^1) + (1 x 10^0) + (4/10^1) + (0/10^2) + (2/10^3)