I am stuck on that one too sorry.
2.756 x 103
1.72 x 104 is 17200 when expanded as 1.72 x 104 is already in standard notation.
? An expression which is obtained by performing a finite number of the following operations on symbols representing numbers: addition, subtraction, multiplication, division, raising to a power.
3 x 10^3 +1 x 10^1 +8
To write a number in expanded form, you first have to divide that number by a power of 10 that produces an answer where the greatest place value digit is units. In this case, we can divide by 10,000 to get 2.5. The next step is to express the power of 10 we used alongside the number as a multiplication. We divided by 10,000 which is the fourth power of 10 or 104. Thus 25,000 in expanded form is 2.5x104
Expanded Notation of 2,784 = (2 x 103) + (7 x 102) + (8 x 101) + (4 x 100).
2.756 x 103
To express a number in expanded notation, you first need to divide it by a power of 10 such that the units is the greatest place value. In this case, you would divide by 100 to get 8.523. The next step is to add that power of ten to the sum as a multiplication. We use 100, which is the second power of 10. This can be written as 102. Thus 852.3 can be written in expanded notation as 8.523x102
A power
The mantissa is located before the multiplication symbol and the power of 10 in scientific notation.
2¹ = 2
You mean, scientific notation of 186000? 1.86*105
Powers are a convenient shortcut for repeated multiplication.
1.5 x 108
a square times n to the 3rd power
2.5 x 105 = 250,000
1.72 x 104 is 17200 when expanded as 1.72 x 104 is already in standard notation.