Adding and Subtracting Decimals

Front

What is the result of 3 + -7?

Back

-4

Front

What is the result of -40 + 15.05?

Back

-24.95

Front

What is the result of 80.93 - 68?

Back

12.93

Front

What is the result of -7 - 2?

Back

-9

Front

What is the result of -5.62 + (-12.9)?

Back

-18.52

Front

Define adding decimals.

Back

Adding decimals involves aligning the decimal points and adding the numbers as you would with whole numbers.

Front

Define subtracting decimals.

Back

Subtracting decimals involves aligning the decimal points and subtracting the numbers as you would with whole numbers.

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form, where the denominator is a power of ten.

Front

How do you add a positive and a negative number?

Back

When adding a positive and a negative number, subtract the smaller absolute value from the larger absolute value and take the sign of the number with the larger absolute value.

Front

What is the rule for subtracting a negative number?

Back

Subtracting a negative number is the same as adding its positive counterpart.