Factors and Multiples
These are the factor pairs for 20.
What are: 1 and 20, 2 and 10, and 4 and 5
Multiply to find 3 equivalent fractions for 1/2.
Sample answers:
What are 2/4, 3/6, and 4/8 (multiply the numerator and the denominator by the same number)
What is 2/7 + 3/7?
What is 5/7?
What is 6 x 7/8?
What is 5 2/8 (or 5 1/4 for bonus points!)
Compare 0.18 to 0.81
0.81 ("81 hundredths") is greater than 0.18 ("18 hundredths).
Prime or Composite? (Be prepare to explain!)
A teacher has 29 students in class. Can she separate the students into equal groups?
No; 29 is a prime number, which means that it is only divisible by 1 and itself.
DIVIDE to find an equivalent fraction for 18/32.
9/16 (the greatest common multiple is 2)
Multiples of 18: 1, 2, 3,6,9, 18
Multiples of 32: 1, 2, 4, 8, 16, 32
What is 2 + 7/8?
What is 2 7/8?
DAILY DOUBLE!
Compare: 7 x 2/4 and 5 x 3/4
14/4 is less than 15/4, so 5 x 3/4 is bigger
Compare 5/10 and 0.5
They are the same. (One is written in fraction form and the other in decimal form.)
DAILY DOUBLE!
Explain the DIVISIBILITY RULE for 6.
The number has to be even and divisible by 3.
Compare. You MUST rewrite both fractions with a common denominator!
4/5 and 9/15
4/5 is equivalent to 12/15. This is greater than 9/15.
What is 6/8 + 5/8? (Your final answer will be a mixed number)
What is 11/8 (1 and 3/8)
What is 3 x 1 1/2?
What is 4 1/2?
What is 7/100 as a decimal?
What is 0.07?
Use DIVISIBILITY RULES: Is 1 a factor of 317? Explain how you know!
Yes; 1 is a factor of EVERY number! (the number times 1 gets the number)
Compare. You MUST rewrite both fractions as equivalent fractions with a common denominator.
5/4 and 8/7
35/28 and 32/28. 5/4 is greater.
What IS a mixed number?
What is a whole number plus a fraction?
A small bag of popcorn has 1 7/8 cups of popcorn. A large bag has 7 times as many cups of popcorn as a small bag. How many cups of popcorn are in the large bag?
13 1/8
What is 0.83 - 0. 19?
What is 0.64?
A city mayor buys 27 solar panels. She wants to organize the panels into a rectangular array. How many different arrays can she make? (Hint: Consider ALL WAYS that factor pairs can be laid out.)
What is FOUR?
1 and 27, 3 and 9, 27 and 1, 9 and 3 (Remember, these are ARRAYS, not factor pairs!)
A black bear hibernates for 7/12 of one year. A bat hibernates for 1/4 of one year. Which animal hibernates longer? Explain!
What is 5 3/6 - 2 5/6? (Hint: Turn both mixed numbers into improper fractions.)
What is 2 4/6 (or 2 and 2/3 for bonus points!)
What two whole numbers does the mixed number 4 2/3 fall between?
What are 4 and 5?
What is 85/100 or 0.85?