Learn how to multiply a two digit number by 11 in just 2 minute? Yes, and you don't need a calculator to do it.
Let me give you an example,
First, split the multiplicand, and put a line at the middle, like this.
Second, Add the two digit.
Third, Put the sum at the middle and that would be your final answer. 275 is your final answer.
Let me give you another example, more difficult one.
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Again, Split the multiplicand, and put a line at the middle
Add the two digit.
Now, we cannot put the whole 11 at the middle, so we need to put the ones at the middle and carry the tens to the first digit and that would be your final answer. 5 + 1 = 6, bring down the 1 and 6, so 616 is your final answer.
Let me give you an example,
First, split the multiplicand, and put a line at the middle, like this.
Second, Add the two digit.
Third, Put the sum at the middle and that would be your final answer. 275 is your final answer.
Let me give you another example, more difficult one.
Again, Split the multiplicand, and put a line at the middle
Add the two digit.
Now, we cannot put the whole 11 at the middle, so we need to put the ones at the middle and carry the tens to the first digit and that would be your final answer. 5 + 1 = 6, bring down the 1 and 6, so 616 is your final answer.
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