Question

welcome to the game show: \which one is it?\ complete each
multiples of 100
300
one of these numbers is a multiple of 100. which one is it?
640 6,400

Explanation:

Step1: Recall the definition of a multiple of 100. A number is a multiple of 100 if it can be divided by 100 without a remainder, or if its last two digits are 00 (since 100 = 10², so multiples of 100 have at least two trailing zeros).

Step2: Check 640. Divide 640 by 100: $640 \div 100 = 6.4$, which is not an integer. So 640 is not a multiple of 100.

Step3: Check 6,400. Divide 6,400 by 100: $6400 \div 100 = 64$, which is an integer. Also, 6,400 ends with two zeros. So 6,400 is a multiple of 100.

Answer:

6,400 (the number in the second box)