0

54 x 150 = (54)·(150) = (50 + 4)·(150 + )
= 75x100 + 0x10 + 60x10 + (    )
= 7500 + 0 + 600 + (    ) =     8100

3

1

2

3

4

5

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8

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10

  1 of 50

FirstOuterInnerLast

 

Level

1

2

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4

How Many

5

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30

50

  

FOIL method @

 

Example >>>

 34 x 52 =  (30 + 4)·(50 + 2)

 

 

 

  

First

(A + B)·(C + D) = AC + AD + BC + BD

= 30 x 50

= 1500

Outer

(A + B)·(C + D) = AC + AD + BC + BD

= 30 x 2

=     60

Inner

(A + B)·(C + D) = AC + AD + BC + BD

= 4 x 50

=   200

Last

(A + B)·(C + D) = AC + AD + BC + BD

= 4 x 2

=       8

 

 

    

 

  

 

= 1768