Adding Decimals and Visual Models

The video tutorial demonstrates how to add two decimals using a visual model and the standard algorithm. It begins with an introduction to the 10x10 hundredths grid, explaining that each square represents one hundredth. The tutorial then shows how to represent 24 hundredths by shading squares on the grid, followed by adding 39 hundredths. The total shaded area represents 63 hundredths. The video also covers the standard algorithm for adding decimals, emphasizing the importance of aligning decimal points and place values to achieve the correct sum.

What are the two methods introduced for adding decimals?

• Standard algorithm and multiplication

• Visual model and subtraction

• Division and visual model

• Visual model and standard algorithm

How many rows and columns does the visual model grid have?

• 15 rows and 15 columns

• 10 rows and 10 columns

• 5 rows and 5 columns

• 20 rows and 20 columns

What is the value of each square in the visual model?

• One whole

• One tenth

• One hundredth

• One thousandth

How many squares are shaded to represent 24 hundredths?

• 14 squares

• 44 squares

• 24 squares

• 34 squares

How are the 24 squares arranged on the grid?

• One full column and 14 additional squares

• Two full columns and 4 additional squares

• Three full columns

• Four full columns

How many additional squares are shaded to represent 39 hundredths?

• 15 squares

• 45 squares

• 25 squares

• 35 squares

What is the total number of shaded squares after adding 24 and 39 hundredths?

• 53 squares

• 63 squares

• 73 squares

• 83 squares

How many full columns are shaded in the visual model for the total sum?

• 6 full columns

• 4 full columns

• 7 full columns

• 5 full columns

How many additional hundredths are in the seventh column in the visual model?

• 4 hundredths

• 2 hundredths

• 1 hundredth

• 3 hundredths

What is the total number of hundredths represented in the visual model?

• 53 hundredths

• 63 hundredths

• 73 hundredths

• 83 hundredths