iRubric: Find least Common Multiple rubric

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Find least Common Multiple Find least Common Multiple Rubric Code: SXWBB55 By yanksrule Ready to use Public Rubric Subject: Math Type: Quiz Grade Levels: 6-8, 9-12, Undergraduate

Least common Multiple
	1 1 pts	2 2 pts	3 3 pts	4 4 pts
Making a factor tree.	1 Factor tree is not set up correctly. No information	2 Factor tree is set up correctly, but factors are incorrect.	3 Factor tree is set up correctly. The correct factors are used. Answer is shown as a common factor string.	4 Factor tree is set up correctly. The correct factors are used. Answer is shown as a common factor string. Answer is also shown using exponents.
Finding greatest common factor.	1 No factor string is shown.	2 Factor string is shown but factors are incorrect or wrong factors are chosen.	3 Factor string is correct. Common factors from each factor string are chosen. Factors are multiplied together and correct greatest common factor is given.	4
Least Common Multiple	1 Wrong factors are used. No steps beyond factor tree are shown.	2 Correct greatest common factor is given, but GCF is not used to multiply by a number to equal the number of starting the factor tree.	3 Correct greatest common factor is used as one of the factors to equal the product of the number starting the factor tree. 8=2x4 6=2x3 The GCF is used to multiply the different numbers to equal the LCM 2x4x3. LCM =24	4