DECIMAL COMPUTATION

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form, where the denominator is a power of ten, represented with a decimal point.

Front

How do you add decimals?

Back

To add decimals, align the numbers by the decimal point and add as you would whole numbers, placing the decimal point in the sum directly below the other decimal points.

Front

How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract as you would whole numbers, placing the decimal point in the difference directly below the other decimal points.

Front

What is the rule for multiplying decimals?

Back

When multiplying decimals, multiply the numbers as if they were whole numbers, then count the total number of decimal places in both factors and place the decimal point in the product accordingly.

Front

What is the rule for dividing decimals?

Back

To divide decimals, move the decimal point in the divisor to the right until it is a whole number, and move the decimal point in the dividend the same number of places. Then divide as you would with whole numbers.

Front

What is the value of 0.004 in fraction form?

Back

0.004 can be expressed as 4/1000, which simplifies to 1/250.

Front

What is the sum of 7.9 and 18.72?

Back

The sum of 7.9 and 18.72 is 26.62.

Front

What is 123.6 minus 0.08?

Back

123.6 minus 0.08 equals 123.52.

Front

How do you convert a decimal to a percentage?

Back

To convert a decimal to a percentage, multiply the decimal by 100 and add a percent sign.

Front

What is the product of 0.5 and 0.2?

Back

The product of 0.5 and 0.2 is 0.1.