Multiplying and Dividing Decimals

Front

What is the process of multiplying decimals?

Back

To multiply decimals, first 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

How do you divide decimals?

Back

To divide decimals, first convert the divisor (the number you are dividing by) into a whole number by moving the decimal point to the right. Move the decimal point in the dividend (the number being divided) the same number of places. Then, perform the division as you would with whole numbers.

Front

What is the cost of 5 movie tickets at $9.50 each?

Back

The cost of 5 movie tickets at $9.50 each is $47.50.

Front

How do you find the cost per page if a report costs $20.70 for 18 pages?

Back

To find the cost per page, divide the total cost by the number of pages: $20.70 ÷ 18 = $1.15 per page.

Front

What is 3.8 multiplied by 4?

Back

3.8 multiplied by 4 equals 15.2.

Front

What is the result of 1.08 divided by 4?

Back

1.08 divided by 4 equals 0.27.

Front

What is the importance of decimal placement in multiplication?

Back

Decimal placement is crucial in multiplication because it determines the value of the product. The correct placement of the decimal point ensures the accuracy of the result.

Front

How can you check your work after multiplying decimals?

Back

You can check your work by estimating the product and comparing it to your calculated answer. If the calculated answer is significantly different from the estimate, recheck your calculations.

Front

What is the relationship between multiplication and division of decimals?

Back

Multiplication and division of decimals are inverse operations. Understanding how to multiply decimals helps in understanding how to divide them, as both processes involve similar steps regarding decimal placement.

Front

What is a common mistake when multiplying decimals?

Back

A common mistake is forgetting to count the total number of decimal places before placing the decimal point in the product.