Now, Multiplying Three-Digit Numbers (Or Larger) By Eleven

Before you proceed reading this topic,  it is strongly suggested that you read my previous post regarding this related topic first – Multiplying Two-Digit Numbers By Eleven.

Consider

143 × 11

Our answer still begins with 1 and ends with 3.  Since

1 + 4 =

and

4 + 3 = 7,

so, our answer for 143 × 11 is

1573

Now you try

236 × 11

Since 2 + 3 = 5  and  3+6 = 9, so the answer is

2596

 How about

462 × 11?

Obviously the answer is not 41082.

Since 4+6 = 10, as before the 0 goes in between the numbers, but the 1 is added to the 4 which gives 5.  And 6 + 2 = 8.  Therefore, the answer is

5082

Ok.  Please read again my previous post and practise this new skill. Good luck!

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Posted on February 10, 2009, in Info Matematik. Bookmark the permalink. Leave a comment.

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