what is easy method to multiple same number?

Answer 1

Sorry, U hafta workout

Answer 2

There is no general method but sometimes there are little tricks you can use. Say for example

21x21=(20+1)21=20x21+21=420+21=441

You can break up 21 as 20+1 then use the distributive property. And the reason this is easier is because 20x21 is easy to multiply out and then to add 21 to it is just as easy.

Or take 24x24

24x24=(25-1)24=25x24-24=600-24=576

or 24X24=(20+2+2)24=20x24+48+48=480+96=576

Same trick. These are just some simple examples of breaking things up to multiply faster.

Answer 3

There really is no easy method. The only easy ones are 10 x 10 or 100 x 100 since you just put a 1 and add the zeros

Answer 4

56 x
56
Multiply 6 x 6 = 36 Write 6 as last digit of answer (in unit place xxx6). Carry up 3 (to tens).

Now multiply (cross) 5 x 6 + 6 x 5 = 60 + 3 (carried up) = 63. Write 3 (in tens place xx36). Carry up 6 (from 63 answer).

Multiply 5 x 5 = 25 and add the 6 to it = 31 (this is your hundreds x1xx and 3xxx thousand digits).

Therefore answer is 3136.

Square any number and work similarly.

Answer 5

no easy method up to certain number

Answer 6

Multiplying a number, n, by itself m times is equivalent to n to the mth power.

Answer 7

cvokhai has already done it. you may remember this rule for multiplication of any two double-digit .
I -(multiply units digits)
X - (cross-multiply tens and units digits and add)
I - (multiply tens digits)

add carried-overs in each stage after putting down the right-most digit.

Answer 8

I'm sorry, but I don't think I understand your question.

Answer 9

your question deos not make sense

Answer 10

know your multiplication table. a duh?..........huh