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How can knowing the GCF and LCM help you when you add subtract and multiply fractions?
Knowing the LCM will help when adding or subtracting unlike fractions. By finding the LCM of the denominators, (called the lowest common denominator) you can convert unlike to like fractions and proceed with the adding or subtracting. Knowing the GCF helps reduce a fraction. By finding the GCF of the numerator and the denominator and dividing both of them by it, you can reduce a fraction to its lowest terms (simplest form). If the GCF is 1, the fraction is in its simplest form. You can successfully multiply fractions without knowing the GCF or LCM.
How can you tell a fraction is greater than another?
Two ways: If they're unlike fractions, convert them to like fractions with a common denominator and compare numerators. Convert them to decimals by dividing their denominators into their numerators and see which is greater.
Explain how using fraction strips with like denominators make it possible to add fractions with unlike denominators?
You need to answer this question because your teacher is looking for your critical thinking skills and how well you understood the lesson.
What are fraction that have same denominator called?
They are called like fractions.In order to add or subtract fractions you will usually need to convert them to like fractions. Then you simply add or subtract the numerators (as required) to form the numerator of the answer. The same (or common) denominator is the denominator of the answer. You may need to simplify the resulting fraction.
What are non examples of like fractions?
non examples of like fractions = fractions that are not equal in value to other fractions. For example: 1/2 and 3/4. 1/2=.5 and 3/4=.75 since .5 does not equal .75, then 1/2 & 3/4 are not "like fractions" (see below for a summary of like fractions). Additional Info.: Like fraction examples: 1/2 & 2/4 (both fractions = the decimal value .5) 1/8 & 3/24 (both fractions = the decimal value .125) A "like fraction" is a fraction that has the same decimal value as another fraction. For example: 1/2 and 2/4 both = the decimal value .5 The easiest way to create a like fraction is to use a fraction that has a decimal value of 1. Simply multiple it times another fraction to create a like fraction. For example: Using 2/2 (which = decimal value 1), you get 2/4 as follows: 2/2 * 1/2 = 2/4 = .5 Note: 2/2 is used to create the "like fraction" 2/4. 2/4 and 1/2 are the "like fractions" because they both = the decimal value .5 You can use any fraction that is = to decimal value 1, for example: 200/200 * 1/2 = 200/400 = .5 200/400 & 1/2 are the "like fractions" that both have a .5 decimal value. You should remember this fact because it is used frequently in algebra and higher math.
