Adding and Subtracting Decimals

Front

What is the sum of 21.0 and 4.09?

Back

25.09

Front

What is 0.8 minus 0.21?

Back

0.59

Front

Calculate the sum of 35.61 and 12.93.

Back

48.54

Front

What do you get when you add 2.98 and 5.3?

Back

8.28

Front

What is the result of adding 5.21 and 4.985?

Back

10.195

Front

What is the definition of decimals?

Back

Decimals are numbers that represent a fraction of ten, using a decimal point to separate the whole number from the fractional part.

Front

How do you align decimals when adding or subtracting?

Back

When adding or subtracting decimals, align the numbers by their decimal points to ensure that each digit is in the correct place value.

Front

What is the importance of place value in decimal addition and subtraction?

Back

Place value determines the value of each digit in a number, which is crucial for accurate addition and subtraction of decimals.

Front

What is the process for adding decimals?

Back

1. Align the numbers by the decimal point. 2. Add starting from the rightmost digit. 3. Carry over if necessary. 4. Place the decimal point in the sum directly below the aligned decimal points.

Front

What is the process for subtracting decimals?

Back

1. Align the numbers by the decimal point. 2. Subtract starting from the rightmost digit. 3. Borrow if necessary. 4. Place the decimal point in the difference directly below the aligned decimal points.