Adding and Subtracting Decimals with Models

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, 0.5 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 answer directly below the other decimal points.

Front

What is the value of the digit 5 in the decimal 3.45?

Back

In the decimal 3.45, the digit 5 is in the hundredths place, which means it represents 5/100 or 0.05.

Front

What is the value of 0.9 in terms of fractions?

Back

0.9 can be expressed as 9/10 in fraction form.

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 answer directly below the other decimal points.

Front

What is the sum of 4.18 and 3.11?

Back

The sum of 4.18 and 3.11 is 7.29.

Front

What does the shaded part in a place value block represent?

Back

The shaded part in a place value block represents a specific decimal value based on the size of the block and how much is shaded.

Front

If you have 0.7 and you add 0.44, what is the result?

Back

0.7 + 0.44 = 1.14.

Front

What is the total cost if two movie tickets cost $3.00 each and popcorn and a slushy cost $8.50?

Back

The total cost is $3.00 + $3.00 + $8.50 = $14.50.

Front

What is the difference between 1.14 and 0.44?

Back

1.14 - 0.44 = 0.70.