Use this math trick to square numbers from 50 to 59 in 2 seconds or less. Let us see how the trick works.

Start by writing down the first part of the answer as shown below

50^{2} = 25___

51^{2} = 26___

52^{2} = 27___

53^{2} = 28___

54^{2} = 29___

55^{2} = 30___

56^{2} = 31___

57^{2} = 32___

58^{2} = 33___

59^{2} = 34___

Notice that for 51^{2}, all you need to do is to add 1 to 25 to get the first part of the answer

By the same token, for 54^{2}, all you need to do is to add 4 to 25 to get the first part of the answer

Now here is how to find the second part of the answer that you will write on the right side of the first part.

Square the number in the ones place. If the number you get after squaring is less than 10, just put a zero on the left.

For example, for 54^{2}, square 4. Since 4^{2} = 16, just put 16 next to 29

54^{2} = 2916

For 53^{2}, square 3. Since 3^{2} = 9 and 9 is less than 10, just put 09 next to 28

53^{2} = 2809

50^{2} = 2500

51^{2} = 2601

52^{2} = 2704

53^{2} = 2809

54^{2} = 2916

55^{2} = 3025

56^{2} = 3136

57^{2} = 3249

58^{2} = 3364

59^{2} = 3481