Flashcard 1 Quantitative Reasoning Flashcard Set for the ISEE

Flip

Back


The correct answer is:

Explanation:

Move the decimal places to the right so that the resulting number is greater than , but less than (, in this case).
The exponent a is because we moved the decimal spaces to the right.

Scientific notation is written in the standard form:

where N is a number greater than 1 but less than 10; and a is a positive or negative integer determined by the number of spaces the decimal point was moved to get N.

Moving the decimal to the left results in a positive exponent; moving it to the right results in a negative exponent.