Q: What will be the unit digit of the squares of the following number 81?

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Here's an example. In the number 382, the number 2 is the "unit's digit" (in the "unit's place"), 8 is the "ten's digit" (in the "ten's place"), and 3 is the "hundred's digit."

It is the area.

It is 63.

97.

It is seven.

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Here's an example. In the number 382, the number 2 is the "unit's digit" (in the "unit's place"), 8 is the "ten's digit" (in the "ten's place"), and 3 is the "hundred's digit."

It is the area.

'5' is the UNIT digit. '6' is the 'tenths' digit. '9' is the 'hundredths' digit.

Truncation is an operation whereby a long decimal representation of a number is stopped after a given number of digits, taking no account of the digit which follows. This is different from rounding where the final digit retained may be increased by 1 if the following digits make a number which is greater than half a unit.

It is 63.

97.

It is seven.

The left most digit.

A number can be a square number if its first digit is 0, 1, 4, 5, 6 or 9.

area/(unit^2)= # of units

A number is made up from digits in the numeral system. We often use the decimal system in which we use 10 digits, In writing the any number, many digits are used, even repitation of digits. when we write any number using the digits, the last digit ( from right side ) in that number is called unit digit. for example in the number 9814868980, here 0 is called unit digit.

Zero