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iRubric: Find least Common Multiple rubric
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Find least Common Multiple
Rubric Code:
S99BW
By
jblanchard
Ready to use
Public Rubric
Subject:
Math
Type:
Quiz
Grade Levels:
6-8, 9-12, Undergraduate
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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
Subjects:
Math
Types:
Quiz
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