Numbers

It is: 4.5 rounds to 5

Essentially that while you could clearly see (or imagine) 3 apples, seeing or even imagining -3 apples was not possible. It was a reflection of poor imagination!

2.7 can be rounded to 3 because 0.7 is greater than 0.5

No. It is a finite decimal number.

An irrational number is one that cannot be expressed as a ratio between two integers, such as pi (which has infinite digits) or square roots of numbers that are not squares of other numbers.

An imaginary number is a different type, such as sqrt (-1), which cannot exist in actuality but appears as a value in higher mathematics.

An imaginary number such as the square root of any negative number.

-- One choice is to measure it.

-- Another choice is to divide the rectangle's area by its length,

if somebody tells you what those are.

Yes, any number you can divide by 2 (or ends in 0,2,4,6,or 8) is even

Nineteen million three hundred and seventy.

Yes they can cause i said they could

You can. One quarter equals 25 %. One half is 50%. One whole (object) is 100% of that object or amount.

One third is 0.33, the three being repeated and called a repeating decimal.

If you want to change 16% into a fraction, it becomes 16/100 and that reduces to

4/25, and so that is the fraction version.

It is: 2*5*7 = 70

In the same way that I have always used them!

Positive numbers are used for measures that are greater than zero. They may be whole numbers - such as numbers of people, or words in a question. Or they may be fractional: your height or weight.

Remember, though that one person's positive number may be another's negative. If you owe me money, it is a positive asset for me, but a negative one for you.

In most cases, negative and positive numbers are used in the same way. There are a very few situations where there seem to be special rules that are applied to negative numbers. But, if you study these from the definition of negative numbers you will see that the rules are really the same, it is just that the numbers are different.

Eight million, two hundred seventy-three thousand, five hundred twenty-one.

12354.

2,002,022

In most cases, you cannot.

It is not clear why you would want to estimate a number when you know the exact value! One approximation is 8000.

Primes: 17 43 23 and 37

Composites: 50 77 42 and 39

The prime factors of 1001 are 7, 11 and 13

1, 2, 3, 5, 6, 9, 10

-- 2 and 8 are not squares.

-- The only factor of ' 1 ' is ' 1 '.

-- The factors of 4 are 1, 2, and 4.

-- The factors of 16 are 1, 2, 4, 8, and 16.

So I guess the number you're looking for is ' 4 '.

321...................................................Blast off

6+

Whole numbers are easier to calculate with. For example if a dollar was not 100

cents but 122.5 cents, it will be really hard to work out change

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Put simply, nothing we experience in our direct day to day life is in fractions until we do something to make it so - an orange is a whole fruit until we cut it into halves or quarters....

No. And it is not a square number outside of maths, either.