Math, asked by deepeshbarman40, 4 months ago

use the short-cut method to find the square of the following numbers which end in 5: (i) 55² step by step explain​

Answers

Answered by Uniquedosti00017
0

Answer:

55 × 55 is 3025

there is a small trick behind this:

step 1, leave 2 space and then square the last digit [ _ _ 25]

step 2, now, you add 1 to the first digit and multiply with the first digit of second number [ 5+1 = 6 × 5 = 30]

now, combine both steps

we get

55 × 55 = 3025

similarly

15× 15 = 225

25× 25 = 62 5

35× 35 = 1225

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