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Q: Write down a square number that is less than 100 and has a tens digit of 8?
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What is the largest 3-digit square number?

The largest 3-digit number - not itself a perfect square - is 999. Calculate its square root, round the answer down, then square the answer again.


How do you work out square root and squares of numbers?

To square a number multiply it by itself (or use a calculator's square button).For square roots they can be worked out:1) using a calculator's square root button;2) take the log of the number (using a calculator or tables), divide it by two and then find the antilog (to the same base, using a calculator or tables) of this result;3) a kind of long "division":3.1) write the number in pairs of digits starting either side of the decimal point; if there is an odd number of digits before the decimal point, the first "pair" will be a single digit; if there is an odd number of digits after the decimal point, add a zero to make the last "pair" two digits, eg 123.456 becomes 1 23 . 45 60;3.2) write in a "bus stop" division over the number (to make it the "dividend"), but extend the down-stroke down a few lines and put a decimal point in the answer over the decimal point in the number;3.3) find the smallest number that when squared is not greater than the first pair of digits3.4) write this number to the left of the down-stroke (as the divisor in a division) and over the first pair of digits3.5) write the square of this number under the first pair of digits and subtract3.6) bring down the next pair of digits from the "dividend"3.7) double the answer so far (ignore the decimal point) and write to the left of the down-stroke next to the number formed in step 3.6, leaving room to add a units digit3.8) find the digit than when added as the units digit to the "divisor" just written (in step 3.7) and the whole "divisor" is multiplied by this digit is not greater than the number formed in step 3.6;3.9) write this digit as the units digit and over the pair of digits brought down3.10) multiply the whole divisor by this digit (its units digit) and subtract from the number formed in step 3.6;3.11) repeat from step 3.6 until there are no more pairs to bring down and the result of the last subtraction is 0, or until the required accuracy is found.eg √2:_______1_._4__1__4_2______-------------------____1_| 2 . 00 00 00 00______| 1______|---___24_| 1__00______| ___96______|--------__281_|_____4 00______|_____2 81______|_____------_2824_|_____1 19 00______|_____1 12 96______|_____----------28282_|_______6 04 00______|_______5 65 64______|_______---------______|________ 38 36etc→ √2 ≈ 1.414


List of four digit combinations of 0123456789?

The list is so easy to construct that you can even do it yourself. Here's how: -- Begin with the number 1,000. -- Count from 1,000 to 9,999. -- Write down every number you say. There's your list.


What is a 4 digit number that can be read upside down and is the same number when right side up?

9116


What is a 3 digit number that rounds down to 900 as nearest hundred and the digit in the ones place is the fifth odd number that you can count beginning with 1 and the sum of the digits is 22?

The number is 949.

Related questions

What is the largest 3-digit square number?

The largest 3-digit number - not itself a perfect square - is 999. Calculate its square root, round the answer down, then square the answer again.


What is the radio code for a 2000 Chevy Camaro?

Press down the 2 and 3 buttons until you get a 3 digit number. Then write it down. Then press the AM FM button and you will get another 3 digit number. Write that one down and then post both of them (all 6 digits) here.


How do you calculate kwh per square foot?

-- Write down the number of kwh -- Write down the number of square feet -- Divide the first number by the second number. -- The answer is mathematically correct, but doesn't appear to have any physical significance in the real world.


If you write down all the numbers from 1 to 100 how many times will you write the digit 3?

The digit 3 will be written 20 times.


How do you work out square root and squares of numbers?

To square a number multiply it by itself (or use a calculator's square button).For square roots they can be worked out:1) using a calculator's square root button;2) take the log of the number (using a calculator or tables), divide it by two and then find the antilog (to the same base, using a calculator or tables) of this result;3) a kind of long "division":3.1) write the number in pairs of digits starting either side of the decimal point; if there is an odd number of digits before the decimal point, the first "pair" will be a single digit; if there is an odd number of digits after the decimal point, add a zero to make the last "pair" two digits, eg 123.456 becomes 1 23 . 45 60;3.2) write in a "bus stop" division over the number (to make it the "dividend"), but extend the down-stroke down a few lines and put a decimal point in the answer over the decimal point in the number;3.3) find the smallest number that when squared is not greater than the first pair of digits3.4) write this number to the left of the down-stroke (as the divisor in a division) and over the first pair of digits3.5) write the square of this number under the first pair of digits and subtract3.6) bring down the next pair of digits from the "dividend"3.7) double the answer so far (ignore the decimal point) and write to the left of the down-stroke next to the number formed in step 3.6, leaving room to add a units digit3.8) find the digit than when added as the units digit to the "divisor" just written (in step 3.7) and the whole "divisor" is multiplied by this digit is not greater than the number formed in step 3.6;3.9) write this digit as the units digit and over the pair of digits brought down3.10) multiply the whole divisor by this digit (its units digit) and subtract from the number formed in step 3.6;3.11) repeat from step 3.6 until there are no more pairs to bring down and the result of the last subtraction is 0, or until the required accuracy is found.eg √2:_______1_._4__1__4_2______-------------------____1_| 2 . 00 00 00 00______| 1______|---___24_| 1__00______| ___96______|--------__281_|_____4 00______|_____2 81______|_____------_2824_|_____1 19 00______|_____1 12 96______|_____----------28282_|_______6 04 00______|_______5 65 64______|_______---------______|________ 38 36etc→ √2 ≈ 1.414


Do you quess to find the square of a number?

That's one way to do it. The problem with that method is that you're usually wrong. A much more reliable method is to figure it out with arithmetic. All you have to do is . . . -- Write the number down. -- Write it down again. -- Multiply the two numbers you see written down. If you multiply correctly, then the answer you get this way is always the correct square of the number.


When you round a number which digit in the number helps you decide to round down?

The digit immediately to the right of your target.


What if you lose your 10 digit code for kumon cosmic club?

Ask your instructor if you can write down your 10 digit code.


If you write down all the numbers from 300 to 400 how many times will you write the digit 3?

120 times.


When you round a number which digit in the number helps you decide to round up or to round down?

The digit immediately to the right of the one you are rounding to.


How do you find out the make of a Yamaha dirt bike by a model code?

Write down the 17 digit VIN number on the head tube. Then enter it at the link below for motoverse.com


Write a four digit number that rounds to 1000 when rounded to the nearest hundred?

1000