You can either use superscript - a typographical device which raises the characters off the base-line and reduces their size.... 52 ... or you can use the caret mark, the programming sign for powers, 5^2, but that is not always recognised by people who do not know computers.
You might be best advised to just write 5 squared, 5 x 5, or 5 * 5
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It is very had to show that but you could approximate it with 22/7. (or just round it to 3.14159265) 22/7=3.142857142857... pi=3.14159265...
What is the least number of place-value blocks that you need to show 3,010? The least number is four: One Tens block, and three Thousands blocks. The greatest number would be 3,010: All Ones value blocks.
First, you calculate it to the desired number of decimals. Then you place it on the number line in the usual manner.
5^(5) / 5^(4) = 5^(5-4) = 5^(1) = 5 or 5^(5) /5^(4)= 5x5x5x5x5 / 5x5x5x5 Cancel down by '5' ( top and bottom) and we are left with 5/1 = 5 as before. NB We do normally show number to the power/exponent of '1' except to aid in exponential calculations.