Subtracting Decimals

Front

What is the result of subtracting a negative number from a positive number?

Back

Subtracting a negative number is equivalent to adding its absolute value. For example, 7.6 - (-6.5) = 7.6 + 6.5 = 14.1.

Front

How do you subtract decimals with different signs?

Back

When subtracting decimals with different signs, convert the subtraction into addition by changing the sign of the number being subtracted. For example, 5.23 - (-9.1) becomes 5.23 + 9.1.

Front

What is the process for subtracting two positive decimals?

Back

To subtract two positive decimals, align the decimal points and subtract as you would with whole numbers, borrowing if necessary.

Front

How do you handle subtraction when the first number is smaller than the second?

Back

If the first number is smaller than the second, the result will be negative. For example, 14 - 8.9 = 5.1.

Front

What is the result of 82.96 - 15.74?

Back

The result is 67.22.

Front

How do you subtract a larger decimal from a smaller decimal?

Back

When subtracting a larger decimal from a smaller one, the result will be negative. For example, -2.09 - 15.271 = -17.361.

Front

What is the importance of aligning decimal points when subtracting decimals?

Back

Aligning decimal points ensures that each digit is in the correct place value, which is crucial for accurate subtraction.

Front

What is the absolute value of a number?

Back

The absolute value of a number is its distance from zero on the number line, regardless of direction. For example, the absolute value of -6.5 is 6.5.

Front

How do you convert a subtraction problem into an addition problem?

Back

To convert a subtraction problem into an addition problem, change the sign of the number being subtracted. For example, a - b becomes a + (-b).

Front

What is the result of subtracting two negative numbers?

Back

Subtracting two negative numbers can be thought of as adding their absolute values. For example, -2 - (-3) = -2 + 3 = 1.