Decimal Operations

Front

What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a decimal point. For example, 0.5 is a decimal that represents 5/10.

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

What is the process for subtracting decimals?

Back

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

Front

How do you multiply decimals?

Back

To multiply 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, then move the decimal point in the dividend the same number of places and divide as usual.

Front

What is the value of 94 - 4.8?

Back

89.2

Front

How many acres more does the Jefferson Memorial have than the Roosevelt Memorial?

Back

10.86 acres

Front

What is the sum of 55.78 and 4.6?

Back

60.38

Front

What is 7.05 - 4.6?

Back

2.45

Front

If Mrs. Linda has 17.16 cups of brownie mix and each brownie uses 0.33 cups, how many brownies can she make?

Back

52