A trick for figuring out squares of larger numbers that is sometimes helpful: if you can write the numbers as the product of two different numbers, then you can square those two numbers and multiply that to find the square of the original. 602 = 102*62 = 100*36 = 3600
18 times
The digit 3 will be written 20 times.
Among the whole numbers, these are:149162536496481100
1 4 9 16 25 36 49 64 81 100 121 144 169 196 225 256 289 324 361 400
There are 100 of them, and unfortunately we're almost out of ink. But don't despair! You can easily find all of them on your own. Simply write all the counting numbers from 1 to 100 down the side of the paper, and write the square of each one next to it. The second column on your paper will be a list of all the square numbers, in order, up to 10,000 .
It is: 81
10001
A trick for figuring out squares of larger numbers that is sometimes helpful: if you can write the numbers as the product of two different numbers, then you can square those two numbers and multiply that to find the square of the original. 602 = 102*62 = 100*36 = 3600
There are nine square numbers including 1 below 100 (1x1...9x9). So, there are 99 - 9 'not square numbers' below 100 which is 90
There are 10 square numbers
18 times
The digit 3 will be written 20 times.
1,4,9,16,25,36,49,64,81,100
Both 25 and 4 are factors of 100 and are square numbers, 25 is 52 and 4 is 22. 100 and 1 are also factors of 100, and are also square numbers: 1 is 12 and 100 is 102.
Among the whole numbers, these are:149162536496481100
1 4 9 16 25 36 49 64 81 100 121 144 169 196 225 256 289 324 361 400