Add Subtract Multiply Decimals Practice

Front

What is the process to find change when a purchase is made?

Back

To find the change, subtract the total cost of the purchase from the amount paid. Change = Amount Paid - Total Cost.

Front

How do you multiply two decimal numbers?

Back

To multiply two decimal numbers, multiply them 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 1.2 multiplied by 2.1?

Back

1.2 x 2.1 = 2.52.

Front

How do you subtract decimals?

Back

Align the decimal points of the numbers, subtract as you would with whole numbers, and place the decimal point in the result.

Front

What is 5.4 minus 2.43?

Back

5.4 - 2.43 = 2.97.

Front

What is the multiplication of 66.25 and 0.8?

Back

66.25 x 0.8 = 53.

Front

How do you solve a multiplication problem involving decimals?

Back

Multiply the numbers as if they were whole numbers, then adjust the decimal point in the result based on the total number of decimal places in the factors.

Front

What is the result of 5.3 multiplied by 3.5?

Back

5.3 x 3.5 = 18.55.

Front

What is the importance of aligning decimal points in addition and subtraction?

Back

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

Front

What is the general rule for adding decimals?

Back

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