Multiples and Factors
Prime and Composite
Prime and Composite
The number of pencils needed for the class is a multiple of 7. Which could be the number of pencils needed?
20 45 30 56
What is 56
Place each number into the calculator and try to divide by 7 - any number that has an answer of a whole number is a multiple. 20 divided by 7 = 2.857... not a whole number. 56 divided by 7 = 8, which is a whole number, therefore a multiple of 7.
Corbin writes a pattern shown below. What is the next number in the pattern?
4, 8, 16, 32, ?
What is 64
4 x 2=8 8 x 2=16 16 x 2=32 32 x 2=64
How do you write 4/6 as a sum of UNIT fractions?
What is 1/6 + 1/6 + 1/6 + 1/6
Corbin completed 4 8/10 of a project.
What is 4 8/10 written as a decimal?
What is 4.8
4 wholes, 8 tenths
Avri eats 2/3 cups of cottage cheese each day. How much will she eat in 7 days?
14/3
7 x 2/3 = 14/3 You only multiply the numerator. The denominator stays the same!
Teddy is learning about prime numbers in math class. His teacher writes 4 numbers on the board and asks him to choose the prime number. Which should he choose?
16 28 41 42
What is 41
Try to divide each number by 2, if the answer is a whole number, it is a composite number. If it is not a whole number, divide by 3, then 4, 5, 6, 7, 8, 9. If none of the numbers divide evenly, it is a prime number. If any divide evenly, it is composite.
Maddie keeps track of the total number of minutes she has played in her softball games, as shown below. What rule can she apply to determine how many minutes she has played at the end of a certain number of games?
Softball Games Time (in min.)
1 20
2 40
3 60
4 80
What is times 20
Remember it is the input from left to right NOT down the column, add 20.
Bella ate 6/10 of the pint of ice cream. Teddy ate more ice cream than Bella. Which fraction could represent how much ice cream Teddy ate?
5/6 2/4 1/3 7/12
What is 5/6
Compare each fraction using the butterfly method.
36 50
6 5
10 6 so 5/6 is greater
Cooper uses 5/12 pounds of bananas and 2/12 pounds of chocolate chips to make muffins. How many more pounds of bananas than chocolate chips did he use?
What is 3/12
5/12 - 2/12 = 3/12
Brady ran for 4/10 of a mile. Alex ran for 5/100 of a mile. How many miles did Brady and Alex run altogether?
What is 45/100
Make the denominator the same 4/10 = 40/100
Then add 40/100 + 5/100 = 45/100
Mr. Myers has 64 stalks of corn to plant. He wants to put them in rows with the same number in each row. How many rows can Mr. Myers have using all the stalks of corn?
6 12 16 33
What is 16
64 divided by each number. If the answer is a whole number, it can evenly be split into that many rows.
Look at the pattern of shapes. How many sides will be in the 8th term?
What is 11
Term 1,2,3,4,5,6, 7, 8
Sides 4,5,6,7,8,9,10,11
Mr. Miller used 5 7/8 gallons of gas driving on Monday. He used 3 6/8 gallons of gas driving on Tuesday. What is the total amount of gas he used on Monday and Tuesday? (make sure there is not an improper fraction!)
What is 9 5/8
5 7/8 + 3 6/8 = 8 13/8 = 9 5/8
Carina is comparing decimals. Which comparison is true?
0.45<0.4 0.75=0.57
0.5>0.53 0.45>0.4
What is 0.45>0.4
Stack and compare left to right!
Mrs. Miller walks 3/6 of a mile during recess. Mrs. Myers walks the same amount. Which choice could be the distance Mrs. Myers walks?
5/8 1/3 9/18 15/24
What is 9/18
Compare each using cross multiplication