Significant figures is a way of trying to convey how accurately something is being measured. A very accurate scale may measure .001 grams, a bathroom scale may be only accurate to within 2 lbs. Exponential notation has nothing to do with measurement. It is just a choice on how to write a number, usually for some mathematical application. 243 = 35 this is exponential 'notation'. Scientific notation is a certain type of exponential notation in which the base must be 10. 243 = 2.43 x 102 that is scientific notation.
How about: 243 = 243.0
243
numbers are divisible by 243 are the multiples of 243 like 243, 486, 729, 972,...
243
243 = 2.43e+2
2.43e+2
2.43 × 102
3*3*3*3*3
35 = 243 = 2.43e2 or 2.43 x 102
The base and exponent form a pair. You can chose any positive base and that will determine the exponent.243 = 49^1.5 that is base = 49, exponent = 1.5)or 243 = 10^2.5353 (approx) or 243 = 7^3.
Exponents count how many times a factor is repeated. 243 = 3 x 3 x 3 x 3 x 3 = 3^5
Significant figures is a way of trying to convey how accurately something is being measured. A very accurate scale may measure .001 grams, a bathroom scale may be only accurate to within 2 lbs. Exponential notation has nothing to do with measurement. It is just a choice on how to write a number, usually for some mathematical application. 243 = 35 this is exponential 'notation'. Scientific notation is a certain type of exponential notation in which the base must be 10. 243 = 2.43 x 102 that is scientific notation.
How about: 243 = 243.0
Three to the fifth power (don't think I can type it here but big three followed by little five). But then... my last math class was almost fifty years ago.
486 - 243 = 243
The opposite of 243 is -243.