Greatest common factor and least common multiple

Find the GCF to simplify fractions and the LCM to add them. Also the backbone of factoring later on.

Standards:6.NS.B.4

Try it: three questions

Real questions from the practice bank. Tap an answer to check it.

Question 1 of 3

A bakery has 24 chocolate chip cookies and 36 oatmeal cookies. They want to pack them into identical boxes with the same number of each type of cookie in every box, with no cookies left over. What is the greatest number of boxes they can make?

Question 2 of 3

A baker has 24 chocolate chips and 36 sprinkles. She wants to make identical bags with the same number of chocolate chips in each bag and the same number of sprinkles in each bag, with no leftovers. What is the greatest number of bags she can make?

Question 3 of 3

A bakery has 24 chocolate cookies and 36 vanilla cookies. They want to make identical gift boxes with the same number of each type of cookie in every box, with no cookies left over. What is the greatest number of gift boxes they can make?

How this fits in

Greatest common factor and least common multiple is one skill in the Fractions & Decimals unit. Students read the unit lesson, then earn a bronze, silver, or gold medal on their last 10 answers. Medals never go down. A mastered unit comes back for review after 1, 3, 7, 16, and 35 days so it stays learned.

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