The sum of the first n odd numbers is n squared.
25 x 25 = 625
large numbers
The rule when rounding off numbers is "If the first figure to be discarded is 5 or more then the previous figure is increased by 1". The first figure to be discarded is 5 and following the above rule : 0.115 becomes 0.12 when rounded off the 2sf
35.674
65.8
The rule when rounding off numbers is "If the first figure to be discarded is 5 or more then the previous figure is increased by 1". As '6' is the first figure to be discarded and this is greater than 5, then the previous figure (5) is increased by 1. 85.62 rounded to the nearest whole number is 86.
It is the first figure that's not a zero. This applies to all numbers.
To figure the variance on a group of numbers, you must first figure out the mean, which is the average of the set. Then, substract the mean from each number in the set. Square the result of those substractions, and then average the squares. You will then have the variance.
large numbers
you can if you are doing experiments
The number 327 to one significant figure is 300. The digit 3 is the first and only significant figure, and numbers after this digit are considered not significant.
The rule when rounding off numbers is "If the first figure to be discarded is 5 or more then the previous figure is increased by 1". The first figure to be discarded is 4. As this is less than 5 then the previous figure (7) remains unchanged. 2.8749 to the nearest hundredth is 2.87
Negative numbers do not show up much in the real world unless someone is trying to figure out a problem. The numbers were first discovered by the Indian civilization.
The rule when rounding off numbers is "If the first figure to be discarded is 5 or more then the previous figure is increased by 1". The first figure to be discarded is 5 and following the above rule : 0.115 becomes 0.12 when rounded off the 2sf
The rule when rounding off numbers is "If the first figure to be discarded is 5 or more then the previous figure is increased by 1". In this case the first figure to be discarded is 3 therefore the previous figure (2) remains unchanged. 239 rounded to the nearest 100 is 200.
You can figure out the "composite numbers" from any table of primes - all the positive integers that are not prime numbers are composite (the number one should also be excluded). The first four composite numbers are:4, 6, 8, 9
The rule when rounding off numbers is "If the first figure to be discarded is 5 or more then the previous figure is increased by 1". As the first figure to be discarded is '6' and this is more than 5 then the previous figure '1' is increased by 1. To one decimal place 5.164 is 5.2
35.674