Adding, Subtracting, and Multiplying Decimals

Front

What is a decimal?

Back

A decimal is a number that includes a decimal point, which separates the whole number part from the fractional part. For example, 3.14 is a decimal.

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 height of 30 identical books if 4 books measure 6.28 inches high?

Back

The height of 30 books is 47.1 inches.

Front

Calculate 57.823 - 9.985.

Back

The result is 47.838.

Front

If a plant grew 12.22 inches in two weeks and 5.62 inches in the second week, how much did it grow in the first week?

Back

The plant grew 6.6 inches in the first week.

Front

If George stretches a 4.6 cm long play dough to 2 times its length, what will be the new length?

Back

The new length will be 9.2 centimeters.

Front

What is 3.7 x 0.43?

Back

The result is 1.591.

Front

What is the value of 0.5 + 0.25?

Back

The value is 0.75.