Question

Solve 821 x 54 using an area model.

Answer 1

Check the image below for your answer. Hope this helped!

Answer 2

44334 is the answer.

Explanation:

As shown in the figure attached,

Length of the rectangle is represented by 821 (800 + 21) and width of the rectangle by 54(50 + 4).

800×50 = 40000

21×50 = 1050

800×4 = 3200

21×4 = 84

Now by adding all four multiplications we get the total of

40000 + 1050 + 3200 + 84 = 44334

Therefore, answer is 44334.