Adding and Subtracting Decimals

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 the expanded form of 23.74?

Back

The expanded form of 23.74 is (2 x 10) + (3 x 1) + (7 x 0.1) + (4 x 0.01).

Front

What is the sum of 34 and 2.5?

Back

The sum of 34 and 2.5 is 36.5.

Front

What is the expanded form of 96.47?

Back

The expanded form of 96.47 is (9 x 10) + (6 x 1) + (4 x 0.1) + (7 x 0.01).

Front

What is the difference when subtracting 0.08 from 123.6?

Back

The difference is 123.52.

Front

What does it mean to add decimals?

Back

Adding decimals means combining two or more decimal numbers to find their total.

Front

How do you line up decimals when adding?

Back

When adding decimals, line up the numbers by the decimal point to ensure each place value is correctly aligned.

Front

What is the place value of 7 in the number 23.74?

Back

The place value of 7 in 23.74 is 0.7 or 7 tenths.

Front

What is the place value of 4 in the number 96.47?

Back

The place value of 4 in 96.47 is 0.04 or 4 hundredths.

Front

How do you subtract decimals?

Back

To subtract decimals, line up the decimal points and subtract as you would with whole numbers.