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Q: How can the divisibility rules help us simplify fractions?

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fractions help you write out divisibility rules because divisibility rules help with fractions . Glad I would help good bye

The LCM will help you add and subtract fractions. The GCF will help you simplify fractions.

The LCM will help you add and subtract fractions. The GCF will help you simplify fractions.

Divisibility rules help you find the factors of a number. Once you've found the factors for two or more numbers, you can find what they have in common. Take 231 and 321. If you know the divisibility rules, you know that they are both divisible by 3, so 3 is a common factor.

Knowing the divisibility rules will help you by being able to recognize if a number has factors (other than one and itself) which are covered by the rules. This will save actually having to start doing divisions.

Finding the GCF will help you to simplify fractions.

The GCF will help you to simplify fractions.

The divisibility rules will show that 53 is not divisible by anything other than 1 and itself. Since it is already prime, it doesn't have a factorization.

Knowing factors will help you find a GCF. To simplify a fraction, divide the numerator and the denominator by their GCF.

It helps you not to put the wrong answer and it helps you to not write anything down.

Factors of numbers are divisible by them with no remainders

they can help you by finding the two factors of the number given

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Finding the GCF of the numerator and the denominator and dividing them both by it is the way to simplify a fraction.

You can test successive prime numbers to see if your number is divisible by them, but knowing the divisibility rules will help you eliminate some steps, depending on what your number is. If your number is odd, you don't have to test for 2. If the sum of your number's digits do not total a multiple of 3, you don't have to test for 3. If your number doesn't end in a 5 or 0, you don't have to test for 5. Just by looking at your number, you can include or eliminate the three most common primes if you know the rules of divisibility.

I've never heard of a "friendly number strategy" per se; but there are specific rules for "divisibility" that you can use to help break up large numbers. For example, if the number is even, it is divisible by 2; if the sum of the numbers

If a number is divisible by anything other than itself and 1, it's composite.

I assume you mean, with different denominators. If you want to add the fractions, subtract them, or compare them (determine which one is greater), you have to convert them to similar fractions (fractions with the same denominator) first. Converting to similar fractions is not necessary, and usually doesn't even help, if you want to multiply or divide fractions.

Knowing the rules of divisibility will help. Also, if you divide the smaller number into the larger one and the answer is an integer, it's a factor.

The least common factor of any set of numbers is 1, so that doesn't help at all. Finding the GCF of the numerator and denominator and dividing them by it will help to simplify a fraction. Finding the least common multiple of the denominators (called the least common denominator) will help when you add and subtract fractions. None of those are needed to multiply fractions.

When adding and subtracting unlike fractions, it is necessary to find a least common denominator. It's the same process as finding an LCM. You can simplify a fraction by finding the GCF of the numerator and denominator and dividing them both by it.

If you know that a number is divisible by three, then you know that three and the number that results from the dividing are both factors of the original number. If you know that a number is not divisible by three, then you won't waste time performing that function. It's rare that the first factor other than one isn't a number between two and ten. If you know the divisibility rules, it will make factoring easier and faster.

Suppose you were trying to find the prime factorization of 123. You know that half of the divisors will be less than the square root. Since the square root is between 11 and 12, you only need to test 2, 3, 5, 7 and 11 as prime factors. If you know the rules of divisibility, you already know that 2 and 5 aren't factors and 3 is. It saves time.

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