Discipline Roots

Instructions: Extractings roots: How to calculate a square root

The task is to extract the square root of a five-digit number mentally. With little training you will be able to achieve this goal. How to extract roots quickly is described under Root extraction method.

The more you improve, the higher your level.

These are the different levels:

Level<=5 minAddition× 5 digitsAddition× 8 digitsAddition√ 5 minAddition
110101010
220202020
330303030
440604040
550905050
6601206060
7611236161
8711537171
9811838182
109121391102
11101243101122
12111273111142
13121303121162
14122306122164
15132336132184
16142366142204
17152396152224
18162426162244
19172456172264
20200540200320