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  •  » Can Someone Please Tell me a Good Way to Remember Square Route? =-S

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Topic review (newest first)

aliya whyte
2005-09-23 04:54:34

dollysaunder wrote:

Sophie wrote:

Help me please! i really need help! I alwats forget what square route is! and next year i'm going into Year11so i think that I really should know! please help me with a good strategy! If you don't have a strategy please tell me what it is! i just got retold last week! i have a horrible memory sometimes! hmm

sadsad sadsadsad i neeed help with double digit and all the rest digit number. love aliya.
sad

John E. Franklin
2005-08-30 02:01:06

To help jog your memory, visualize a tree with roots under the ground.

The roots are below the tree, so remember that the answer to a square root problem is usually smaller (roots below).

The square root of any number above one is going to be smaller than what you started with.

However, if you become a math wiz someday, you will learn that the square root of numbers between zero and one become bigger!

Good Luck!

ganesh
2005-08-08 15:32:08

Here are the squares and square roots of all squares up to 31.
1 = 1
2 = 4
3 = 9
4 = 16
5 = 25
6 = 36
7 = 49
8 = 64
9 = 81
10 = 100
11 = 121
12 = 144
13 = 169
14 = 256
15 = 225
16 = 256
17 = 289
18 = 324
19 = 361
20 = 400
21 = 441
22 = 484
23 = 529
24 = 576
25 = 625
26 = 676
27 = 729
28 = 784
29 = 841
30 = 900
31 = 961

Remember,
(1) The last digit of a perfect square is always 0, 1, 5, or 6.
(2) Finding square roots is easier by prime factorisation.
eg. 784 = 2 x 2 x 2 x 7 x 7 x 7
Therefore, the square root of 784 is 2 x 2 x 7, i.e. 28

wcy
2005-08-08 15:13:57

here are some tips to remember square root of large numbers..

you can break up the square root into two or more parts, eg

√36=√4 x √9 =2x3=6
that way, you need to remember less values
but this can only work for some numbers

MathsIsFun
2005-08-07 20:55:15

Are YOU asking, dollysaunder?

Anyway, square root is just the opposite of square.

To square a number is to multiply it by itself. The square of 5 is 5x5=25, so the square root of 25 is 5.

5   Squared ==>       25
5  <== Square Root   25

So, for example: what is the square root of 36 ???

*thinks* 6 x 6 = 36. (6 squared is 36)

Answer: the square root of 36 is 6

And if that fails then think of a square:

RRRR
RRRR
RRRR
RRRR

That square has 16 Rs in it, and it is 4 Rs wide by 4 Rs high.

So, 4 squared is 16.
And the square root of 16 is 4.

What is the square root of 81 ???

dollysaunder
2005-08-07 19:25:19

Sophie wrote:

Help me please! i really need help! I alwats forget what square route is! and next year i'm going into Year 7 so i think that I really should know! please help me with a good strategy! If you don't have a strategy please tell me what it is! i just got retold last week! i have a horrible memory sometimes! hmm

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