When dividing by 100, how does the placement of the decimal change?

A. One place to the right
B. One place to the left
C. Two places to the right
D. Two places to the left



Answer :

When dividing a number by 100, the decimal point moves two places to the left. This is because dividing by 100 is equivalent to multiplying by [tex]\( \frac{1}{100} \)[/tex], which is [tex]\( 0.01 \)[/tex].

Here is a detailed step-by-step explanation:

1. Understand what division by 100 means:
- Dividing by 100 is the same as multiplying by 0.01.

2. Effect on the decimal point:
- When you multiply a number by 0.01, you are making the number 100 times smaller.
- To make a number 100 times smaller, the decimal point must move two places to the left.

3. Example:
- Consider the number 345.7.
- When you divide 345.7 by 100, you move the decimal point two places to the left.
- Thus, 345.7 becomes 3.457.

Based on this detailed explanation, the correct answer is:

☐ One place to the right
☐ One place to the left
☐ Two places to the right
☑ Two places to the left