If the number can be written as 2*3*5 it cannot be prime!
250 written in index form = 2.5 × 102
2x2x2x2
No. In the index form a number is expressed as a multiple of its prime factors whereas in the standard form it is expressed as a number between in the range [1, 10) multiplied by an integer power of 10. So, for example, 1728 in index form = 26*33 1728 in standard form = 1.728*103 The index form can only be used for integers.
In standard index form, 450 can be written as 4.5 x 10^2. This form is used to represent very large or very small numbers in a concise manner by expressing them as a number between 1 and 10 multiplied by a power of 10. In this case, 4.5 is the coefficient and 10^2 indicates that the decimal point is moved two places to the right, making the number 450.
If the number can be written as 2*3*5 it cannot be prime!
250 written in index form = 2.5 × 102
2x2x2x2
No. In the index form a number is expressed as a multiple of its prime factors whereas in the standard form it is expressed as a number between in the range [1, 10) multiplied by an integer power of 10. So, for example, 1728 in index form = 26*33 1728 in standard form = 1.728*103 The index form can only be used for integers.
Writing Numbers in Index FormWe know that: So, we can write 8 as 23.Likewise, 27 can be written as 33and 125 can be written as 53.So far, we have considered numbers that have a group of the same factors. Sometimes, a number has more than one group of the same factors as shown in the following example.Example 20Write 200 in simplest index form.Solution:Key Termsimplest index form
Index form
Index form is where a number is expressed as the exponents of its prime factors. At the moment, you have it as its prime factors. We have two 3s, so that can be given as 32 and we have four 4s, so that can be given as 44. Thus 3x3x4x4x4x4 in index form is 32x44
"index" is the singular form - "indices" is the plural :)
5524288 = 26*7*11*19
Well, darling, to write 18 in index form, you simply express it as 2^1 x 3^2. That's the fancy math way of saying 2 to the power of 1 times 3 squared. So, there you have it, 18 all dressed up in its index form finery.
The possessive form of "index" is "index's." For example, "the index's values are displayed in alphabetical order."
Factor trees show the index form for each number.126 23 212=3*2*2728 92 4 3 32 272=2*2*2*3*3The index form is a number written down by the primes that make it up. Look at my examples if your not sure of what I mean