An easy way to multiply by 11
11 X 42 = 462
This is obtained by
First digit of the number : 4
Adding the two digits: 4+2 :6
Last digit of the number: 2
So, the answer is 462 !!
Let's try another one.
11X48
Here, 4+8 = 12, its greater than 9, so add a carry to the first number
First Digit: 4
Last Digit of Adding the digits 8+4: 2 (carry 1)
Last digit: 8
So the answer(don't forget the carry)
528!
Try some at home with your school aged child over dinner today :)
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