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The prime factorization.
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Why is multiplying or dividing the numerator and denominator by the same nonzero number the same as multiplying or dividing the fraction the fraction by 1?
Because doing so is equivalent to multiplying or dividing by x/x, which can be cancelled down to 1.
What do you turn the second fraction into in a dividing problem?
When dividing by a fraction, the second fraction (the divisor) is changed into its reciprocal by swapping the numerator and denominator over (turning it upside down) and then it is multiplied by the first number (fraction).
How can you cancel down fractions?
By dividing the numerator and denominator by their HCF
What numbers are rational numbers?
A rational number is any number that can be made by dividing one integer by another.0.5 is a rational number as it can be made by dividing the number 1 by the number 22 is a rational number because it can be made by dividing 2 by 1-6.6 is a rational number because it can be made by dividing -66 by 10---------------------------------------------------------Note there are number that are called irrational numbers. Irrational numbers are all "real" numbers (numbers with a decimal point) that cannot be written as a simple fraction - the decimal goes on forever without repeating.For instance the number Pi is an irrational number.A rational number is a real number that can be expressed as a ratio of two integers. Another way to think about it is this: if you can write a number as a fraction then it's a rational number.
Bottom number in a fraction is called?
the bottom number of a fraction is a denominator and to remember d for down
Is 713 a prime number?
Yes. Here's how to prove it. Try dividing 713 by all the primes below its square root. Take the square root, rounded down: 26 Find the largest prime below that: 23 Try dividing 713 by 23, 19, 17, 13, 11, 7, 5, 3, 2 (all the primes from 23 down). It doesn't divide evenly into any of them so it must be prime.
What is the meaning of a product of primes?
Expressing 15 as a product of its primes is 3 x 5 = 15 Composite numbers can be broken down into a product of prime numbers.
Why is 3 not a composite number?
The only factors or divisors or 3 are 1 and the number 3 itself. The definition of a prime is a number whose only factors are 1 and itself so 3 fits this definition.Any composite number can be broken down into a product of primes. If you try, you will see there is not product of primes that equals 3.
Why is multiplying or dividing the numerator and denominator by the same nonzero number the same as multiplying or dividing the fraction the fraction by 1?
Because doing so is equivalent to multiplying or dividing by x/x, which can be cancelled down to 1.
What is factorise in maths?
When you factor a number, you break it down into factors that multiply up to the number. For example, 12=3x4. There is also prime factorize when you factor the number into primes. For example, 100=2^2x5^2.
When you convert in the metric system what are you doing to the number?
you are dividing it by ten if you are going up, times it by ten if you are going down.
What do you turn the second fraction into in a dividing problem?
When dividing by a fraction, the second fraction (the divisor) is changed into its reciprocal by swapping the numerator and denominator over (turning it upside down) and then it is multiplied by the first number (fraction).
The continent of Australia can be broken down into three main geographical divisions called the?
Western Plateau ,Central Lowlands, Great Dividing Range
What is 230 broken down into primes?
The prime factors of 230 are: 2, 5 and 23
What is the result of Writing a number down 1 through 9 then multiplying it by 2 then adding 12 to that answer then subtracting 4 from that answer then dividing it by 2?
The answer is the number you first wrote down plus four. Jeeze! That's hard! Is that like your homework or somethin?
Why is long division called long division?
It is called long division because you write down all the numbers for each step to solve the problem and for large numbers there is a lot of writing down. There is a technique called short division which is similar but is more mental, not requiring all the long division steps. But it is usually done only when you are dividing by a small number less than 10, so it is not that useful.
What is the mountain range travelling through Queensland New South Wales and Victoria?
The mountain range that runs down the east coast of Australia is called the Great dividing range.
