Multiplying Decimals - Models and Algorithm

Front

What is the product of two decimals?

Back

The product of two decimals is found by multiplying the numbers as if they were whole numbers, then placing the decimal point in the product based on the total number of decimal places in the factors.

Front

How do you multiply decimals using a model?

Back

You can use area models or grid models to visually represent the multiplication of decimals, showing how the parts combine to form the total product.

Front

What is the equation represented by the model showing 0.2 x 0.4?

Back

0.2 x 0.4 = 0.08.

Front

If Sally runs 2.7 miles each morning, how do you calculate her total distance after a week?

Back

Multiply the daily distance by the number of days: 2.7 miles x 7 days = 18.9 miles.

Front

What is the multiplication sentence for the model showing 0.3 x 0.8?

Back

0.3 x 0.8 = 0.24.

Front

How do you find the total length of wire needed if each piece is 12.5 inches and 18 pieces are cut?

Back

Multiply the length of one piece by the number of pieces: 12.5 inches x 18 = 225 inches.

Front

What is the product of 6.31 and 4.7?

Back

The product is 29.657.

Front

What is the first step in multiplying decimals?

Back

Align the numbers vertically by their rightmost digits, ignoring the decimal points.

Front

How do you determine the placement of the decimal point in the product of two decimals?

Back

Count the total number of decimal places in both factors and place the decimal point in the product accordingly.

Front

What is an area model for multiplying decimals?

Back

An area model visually represents the multiplication of two numbers by dividing a rectangle into sections that correspond to the values of the factors.