Adding and Subtracting Decimals

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 align decimals when adding or subtracting?

Back

When adding or subtracting decimals, align the numbers by the decimal point to ensure that the digits are in the correct place value.

Front

What is the result of 34.27 - 17.51?

Back

16.76

Front

What is the result of 16.46 - 13.87?

Back

2.59

Front

What is the result of 7.9 + 18.72?

Back

26.62

Front

What is the result of 86.04 + 4.04?

Back

90.08

Front

What is the result of 8.42 - 5.14?

Back

3.28

Front

What is the importance of the decimal point in a number?

Back

The decimal point separates the whole number part from the fractional part, indicating the value of each digit based on its position.

Front

How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator by the denominator. For example, 1/4 = 0.25.

Front

What is the rule for adding decimals?

Back

To add decimals, align the decimal points, add the numbers as you would whole numbers, and place the decimal point in the sum directly below the aligned decimal points.