Adding, Subtracting and Multiplying Decimals

Front

What is a decimal?

Back

A decimal is a number that includes a decimal point, which separates the whole number part from the fractional part. For example, 3.14 is a decimal.

Front

How do you add decimals?

Back

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

Front

What is the result of 12.931 + 9.67?

Back

22.601

Front

How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract as you would whole numbers, placing the decimal point in the difference directly below the other decimal points.

Front

What is the result of 4.8 - 2.75?

Back

2.05

Front

How do you multiply decimals?

Back

To multiply decimals, multiply the numbers as if they were whole numbers, then count the total number of decimal places in both numbers and place the decimal point in the product accordingly.

Front

What is the result of 3.7 x 0.43?

Back

1.591

Front

What is the result of 0.03 x 0.9?

Back

0.027

Front

If Lisa has a budget of $100 and spends $27.99 and $25.99, how do you find out how much she has left?

Back

Subtract the total spent from the budget: $100 - ($27.99 + $25.99) = $46.02.

Front

What is the importance of aligning decimal points when adding or subtracting?

Back

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