Math and Arithmetic
Factoring and Multiples

Can you always find the LCM by multiplying the numbers and dividing by HCF find an example where this does not work?

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This does not work when one of the numbers is negative.

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Related Questions

Adding two negative numbers will always be negative. Subtracting two negative numbers may be positive or negative. Dividing or multiplying two negative numbers will always be positive.No

Cancelling out common factors means you are working with smaller numbers. It is usually, but not always, beneficial.

No. For example: LCM(3, 5) = 15 but 3 &times; 5 &divide; 2 = 7&frac12; LCM(4, 8) = 8 but 4 &times; 8 &divide; 2 = 16 Multiplying two numbers and dividing by 2 will ONLY work when the Highest Common Factor of the two numbers is 2. For any two numbers: LCM = product &divide; HCF

No. You can always find a common multiple by multiplying two numbers together. It will only be the least common multiple if the numbers have no common factors other than one.

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always because you are either multiplying or dividing soemthing to make it out of 100 percent (one whole)

When multiplying two negative numbers you multiply as you would with regular positive numbers the product will ALWAYS be positive. Example: -3 x -3 = 9

always a positiveMultiplying and dividing rule:(remember this; it's very useful) When you multiply or divide two numbers . . .-- If they both have the same sign, then the answer is positive.-- If they have different signs, then the answer is negative.

The product of two numbers is the two numbers multiplied together. When multiplying a positive number and a negative number, the answer is always negative. For example: 7*-3= -21

It depends on the specific units, but it will almost always be a matter of multiplying or dividing by some power of 10.

Negative numbers do not have square roots. Multiplying any number by itself will always be a positive number. For example, -1 x -1 is 1. Because two negatives cancel themselves out, and regular numbers are always positive.

No, that will not always work. in the case for some numbers it will work. for example 3 * 4 = 12. it works here. however if you do that for 30 and 20, you will get 600. the real lowest common multiple is 60. so it does not always work.

You can always determine a common multiple of two numbers by multiplying them together. You can find out if it's the LCM by dividing it by their GCF.

Positive A simple rule to remember this is when multiplying two numbers with the same sign, the result is ALWAYS positive. When multiplying two numbers with different signs, the results is ALWAYS negative.

Pigs have many cells. It is difficult to stay how many cells a living things has as cells are always multiplying and dividing.

Yes - while multiplying odd numbers by even numbers will always produce an even result.

If you multiply together two numbers with the same sign (i.e. two positives or two negatives) then your answer will always be a positive number.For example, 2 * 2 = 4 and -2 * -2 = 4.

when you are dividing 2 numbers with the same sign the answer is ALWAYS positive but when you are dividing 2 number with opposite signs the answer is ALWAYS negitive. the same is true with multiplication also

Yes. When multiplying it does not matter what order the numbers are in, it will always equal the same.

81. Whenever multiplying two negative numbers, the answer is ALWAYS positive.

81. Whenever multiplying two negative numbers, the answer is ALWAYS positive.