Question

Show how to find 42×27 using an area model.

Answer 1

Explanation:

First break it down

42= 40 & 2

27= 20 & 7

• Then times 40 & 20 to get 800
• 20 x 2 to get 40
• 40 x 7 to get 280
• 7 x 2 to get 14

Now add them all together.

800 40 1080

+280 +14 + 54

---------- ------- ---------

1080 + 54 = 1134