How to write 12.4 in standard notation?
Do you understand what standard notation is? It is regular numbers. That number is already IN standard notation. Do you mean “Scientific notation”? That is a way to make numbers that are too big or too small easy to write using exponents. The big numbers have positive exponents and the teeny numbers have negative ones. So if you see a negative exponent, it is a number LESS than zero. That number CAN be changed to scientific notation by making the number be between 1 and 9. If you move the decimal point one place over to be between the one and 2- it is 1.24 x 10 to the first power. If it said 1.24 x 10 to the 3rd power, it would be 1,240! Be careful with the terms because it is a favorite thing for teachers to see if you are paying attention to them, converting them back and forth.