Which expression is equivalent to 15x 11?

Answer 1

15 x 11 (15 times 11) = 165

To work this out...

There is an easy way of multiplying by 11.

Add the digits of your other number (i.e. 15 = 6)

Put this in the middle of the number (i.e. put it in the middle of 15, = 165)

If the digits added together is a 2 digit number, then you put the units in the middle, and add the 10s to the 100s column.

e.g. 69 x 11

6+9 = 15

put the 5 in the middle: 659

Add the 1 to the hundred's: 6+1 = 7

So the answer is 759