Ask Question
9 July, 03:18

What does 7263*27 equal

+1
Answers (1)
  1. 9 July, 03:37
    0
    Since it is easily calculated using a calculator, I assume you need this done in the head.

    Yes, you can do that.

    It takes a few words to explain this, but if you understand how this is done, it goes fast.

    27=3*9

    so 7263*27 = (7263 * 3) * 9

    so first multiply 7263 by 3.

    72*3=216, 63*3=189

    so 3*7263=21789

    So far so good.

    Now you can multiply anything by nine by subtracting from the right neighbour, starting from the right.

    For example, 27*9. the right neighbour of 7 is 0, borrow 1, so 10-7=3

    the right neighbour of 2 is 7, but we borrowed 1, so 6. 6-2=4

    At the beginning of the number 27, we add a zero which we subtract from the right neighbour 2 to get 2.

    So 27*9=243.

    Now for 21789, we have successively

    (10) - 9=1

    8-8=0 (9 was borrowed to become 8)

    8-7=1

    7-1=6

    (11) - 2=9

    and finally

    1 - 0 = 1 (2 was borrowed to become 1)

    So the final answer is 196101
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “What does 7263*27 equal ...” in 📗 Biology if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers