Question

Find square root of 1521 using estimation method

Answer 1

Answer:

45

Step-by-step explanation:

1) Divide 1521 into 2 parts: 1500 and 21

2) Square numbers closest to 21 are 16 and 25, with 25 being the closer one

   So we must assume that units place will be the square root of 25, 5.

3) Square numbers closest to 15 are 9 and 16, with 16 being the closer one. So                                        we must assume the square root of 16, 4, to be the tens place

Therefore, 45 is the approx. square root of 1521

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