Name: ________________________
Date: ________________________

Draw an area model to find the partial products and their sum. Then multiply using the standard algorithm. Compare your answers in each part to check that the product is correct.

1. [tex]$523 \times 416$[/tex]

a. Draw an area model to find the partial products and their sum.

b. Multiply using the standard algorithm.

[tex]\[
\begin{array}{|l|l|l|l|l|l|}
\hline
& & & & 4 & 1 & 6 \\
\hline
\times & & & & 5 & 2 & 3 \\
\hline
& & & & & & \\
\hline
& & & & & & \\
\hline
& & & & & & \\
\hline
+ & & & & & & \\
\hline
& & & & & & \\
\hline
\end{array}
\][/tex]



Answer :

Name: [Your Name Here]
Date: [Today's Date Here]

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To find the product of 523 and 416, we will use the area model to find the partial products and then use the standard algorithm for multiplication.

Step 1: Using the Area Model

First, we decompose each number into parts that are easier to multiply and then compute the partial products.

[tex]\[ 523 = 500 + 20 + 3 \][/tex]
[tex]\[ 416 = 400 + 10 + 6 \][/tex]

We set up an area model that multiplies each part of 523 by each part of 416:

[tex]\[ \begin{array}{|c|c|c|c|} \hline & 400 & 10 & 6 \\ \hline 500 & 500 \times 400 = 200000 & 500 \times 10 = 5000 & 500 \times 6 = 3000 \\ 20 & 20 \times 400 = 8000 & 20 \times 10 = 200 & 20 \times 6 = 120 \\ 3 & 3 \times 400 = 1200 & 3 \times 10 = 30 & 3 \times 6 = 18 \\ \hline \end{array} \][/tex]

Now, let's list the partial products calculated:

1. [tex]\( 500 \times 400 = 200000 \)[/tex]
2. [tex]\( 500 \times 10 = 5000 \)[/tex]
3. [tex]\( 500 \times 6 = 3000 \)[/tex]
4. [tex]\( 20 \times 400 = 8000 \)[/tex]
5. [tex]\( 20 \times 10 = 200 \)[/tex]
6. [tex]\( 20 \times 6 = 120 \)[/tex]
7. [tex]\( 3 \times 400 = 1200 \)[/tex]
8. [tex]\( 3 \times 10 = 30 \)[/tex]
9. [tex]\( 3 \times 6 = 18 \)[/tex]

We now sum all the partial products to find the total product using the area model:

[tex]\[ 200000 + 5000 + 3000 + 8000 + 200 + 120 + 1200 + 30 + 18 = 217568 \][/tex]

Step 2: Using the Standard Algorithm

Next, we will use the standard multiplication algorithm to verify our result:

1. Multiply 523 by 6:
[tex]\[ 523 \times 6 = 3138 \][/tex]

2. Multiply 523 by 10 (shift one place to the left):
[tex]\[ 523 \times 10 = 5230 \][/tex]

3. Multiply 523 by 400 (shift two places to the left):
[tex]\[ 523 \times 400 = 209200 \][/tex]

4. Sum the results of each individual multiplication:
[tex]\[ 3138 + 5230 + 209200 = 217568 \][/tex]

So, the result of [tex]\( 523 \times 416 \)[/tex] using the standard algorithm is also 217568.

Conclusion:

The product obtained from both the area model and the standard algorithm is the same, verifying that our calculations are correct.

[tex]\[ \boxed{217568} \][/tex]