Math Vocab
A number that only has factors of 1 and itself
Examples: 1, 2, 3, 7
Prime Number
What factor pair is missing for 12?
1 x 12
2 x 6
__ x __
3 x 4 or 4 x 3
What is the greatest common factor of 4 and 8?
4
What is the least common multiple of 2 and 3?
Hint: Skip count!
6
What does it mean to have a fixed mindset?
Giving up easily, mistakes = failure, avoid challenges, jealous of others' success, you can't get better with practice
Two numbers that when multiplied, equal a product
Example: 1, 2, 3, 4, 6, and 12 are all ____ of 12
Factors
1 x 20, 2 x 10, 4 x 5
What is the greatest common factor of 15 and 25?
5
What is the least common multiple of 2 and 9?
18
What does it mean to have a growth mindset?
Mistakes are stepping stones for learning, feedback is helpful, supportive of others, we get better the more we practice!
When we skip count by a number, we find its ______.
Example: 2, 4, 6, 8, 10 are all _____ of 2
Multiples
What is the PRIME FACTORIZATION of 100?
Hint: Make a factor tree
2 x 2 x 5 x 5
What is the GCF of 18 and 27?
9
What is the least common multiple of 4 and 5?
20
Who was our September mathematical mind?
Katherine Johnson
The highest factor that two numbers share
Hint: We usually find this using a venn diagram
Greatest Common Factor
What is the prime factorization of 300?
Hint: Make a tree!
2 x 2 x 5 x 5 x 3
Ms. Rifley is making prize packs for her students. She has 20 mints and 12 erasers. Each pack needs to be fair and she doesn't want any leftover mints or erasers. How many packs can she make?
BONUS: How many mints in each pack? How many erasers?
4 packs
5 mints, 3 erasers in each pack
Ms. Rifley and Ms. Nelson both love to get Caribou before work. They both went yesterday! If Ms. Rifley goes every 4 days and Ms. Nelson goes every 3 days, how many days will it be until they both go on the same day?
Hint: Skip count or make a table!
12 days
What was Katherine Johnson's main contribution to the field of math and science?
She helped launch one of the first manned missions to space, she broke barriers for women, especially African American women, to allow them more opportunities in the future
The lowest multiple that two numbers have in common
Hint: We find this by skip counting
Least Common Multiple
Ms. Rifley wants to put her students into equal groups for a class game. If she has 36 students, what could her groups be?
Hint: She could have ___ groups of ___
(more than 1 answer!!)
6 groups of 6
4 groups of 9
3 groups of 12
1 group of 36
2 groups of 18
Ms. Quehl was ordering new books for her classroom. She wants to make book bins for each table. She ordered 18 fiction books and 6 nonfiction books. If she wants each table to have the same amount of books, how many table bins can she make?
Bonus: How many fiction at each table? Nonfiction?
6 table bins
3 fiction, 1 nonfiction at each table
Ms. Cochran & Ms. Peterson have very similar fashion tastes. They both own the same gold sweater that they love to wear on fall days. Ms. Cochran wears hers every two days and Ms. Peterson wears hers every four days. They both wore them yesterday. How long will it be until they wear it on the same day?
Hint: Skip count or draw a picture!
4 days!
What were some challenges that Katherine Johnson had to overcome in order to achieve all that she did?
Segregation, limited opportunities to get an education, sexism, racism