Question

3) What is seventy thousand, five hundred sixty four and forty five hundredths in standard

form?
a. 70,064.45
b. 70,564.45
c. 70,564,450
d. 70,564.045

Answer 1

b. 70,564.45

Explanation:

there are cultures, where we use the comma as decimal point, but then we use the period (dot) as marker for every third position left of the decimal "point".

so, whatever format you use you cannot use the same symbol for both. otherwise, everybody will missinterpret the digits after the decimal point as significant digits before the decimal point.

a. is wrong, because the number itself is wrong (the five hundred is missing).

b. is correct

c. is wrong, because it violates exactly the principle I just explained.

d. is wrong, because it has the digits after the decimal point in the wrong place (.045 means 45 thousandths instead of the requested hundredths).

Answer 2

b.70,564.45

is the correct answer