2.2 cents
You write the dollars to the left of the decimal point; and the cents to the right, using two decimals.
In the context of money, there are typically two numbers behind the decimal point. This is because currency is usually divided into units and cents. For example, in $10.25, the number 25 represents cents, and there are two numbers behind the decimal point.
$2.00 2 dollars, or two-hundred cents. $0.02 Point zero-two dollars, or two cents. $0.002 (0.002 dollars) Point zero-zero-two dollars. This has a value of 1/5 of a penny. ---------- 2.00¢ (=0.02 dollars) Two cents (with a redundant .00 for demonstration purposes). 0.2¢ (=0.002 dollars) Point-two cents, so 5 of these would make up one whole cent. 0.02¢ (=0.0002 dollars) Point-zero-two cents, so 50 of these would make up one whole cent. 0.002¢ (=0.00002 dollars) Point-zero-zero-two cents, so 500 of these would be required to make up one single cent.
Move the decimal point two positions to the right and add a percentage sign.
7.92 Seven and ninety-two hundredths Seven point nine two
You write the dollars to the left of the decimal point; and the cents to the right, using two decimals.
The difference of two decimals is an integer when the two decimals have the same number of digits after the decimal point, and their fractional parts cancel out perfectly. For example, subtracting 2.50 from 5.50 results in an integer (3.00) because both decimals have two digits after the decimal point. If the decimal parts align such that their difference results in a whole number, the outcome will be an integer.
In the context of money, there are typically two numbers behind the decimal point. This is because currency is usually divided into units and cents. For example, in $10.25, the number 25 represents cents, and there are two numbers behind the decimal point.
When you multiply decimals, the decimal point is placed in the product.
For example 2.67 two point sixty-seven
$2.00 2 dollars, or two-hundred cents. $0.02 Point zero-two dollars, or two cents. $0.002 (0.002 dollars) Point zero-zero-two dollars. This has a value of 1/5 of a penny. ---------- 2.00¢ (=0.02 dollars) Two cents (with a redundant .00 for demonstration purposes). 0.2¢ (=0.002 dollars) Point-two cents, so 5 of these would make up one whole cent. 0.02¢ (=0.0002 dollars) Point-zero-two cents, so 50 of these would make up one whole cent. 0.002¢ (=0.00002 dollars) Point-zero-zero-two cents, so 500 of these would be required to make up one single cent.
Two decimals are equivalent only if everything from the decimal point to the last non-zero digit is the same in both of them. Additional zeros after that don't matter.
Move the decimal point two positions to the right and add a percentage sign.
7.92 Seven and ninety-two hundredths Seven point nine two
what are two other decimals equivalent to 2.2 ?
to do this, just drop the percent sign, the move the decimal point two places to the right.
If the two decimal numbers have x and y digits after the decimal points, then the product has (x + y) digits after the decimal point.