Prime & Composite
A number that only has two factors; 1 and itself.
What is a prime number?
Lylee is 10 years old. Her grandma is 6 times older than Lylee. How old is the grandma?
What is 60 years old? (10x6)
36 divided by 6 = _________
6
Solve.
(4x5)+(5x6)= ______
20+30=50
6x10=___
A number that has MORE factors than 2 factors.
What is a composite number?
Camila picked 8 flowers. Ahni picked 3 times as many flowers. How many flowers did Ahni pick? Write an equation and solve.
8 x 3 = 24 flowers
Mr. Ausborn has 26 students in her class. Mrs.Kyle has half the amount of students. How many students does Mrs. Kyle have?
26 รท 2 = 13 students
Table A has 5 students. Each student has 4 pencils. Table B has 4 students. Each student has 4 pencils.
How many pencils do both groups have total?
5x4=20
4x4=16
20+16=36 pencils total
3x8=____
24
What kind of number is 7? Prime or composite? Why?
What is a prime number because its only factors are 1 and 7?
Mrs. Germundson is 4 times as old as Josie (who is 9). How old is Mrs. Germundson? Write an equation and solve.
9 x 4 = 36
Jace has a book with 30 football cards on a page. The cards are split into 5 rows on the page. How many football cards are in each row? Solve.
30/5=6 in each row
The 2nd grade has 60 students. The 4th grade has 2 times as many students in 2nd grade. How many students does 4th grade have?
How many MORE students does 4th grade have than 2nd grade?
60x2=120 students
120-60=60 more students
5 x______=60
12
1,624,2,332 is a ___________ number because _________________________.
Composite because all even numbers are divisible by 2 along with 1.
Mr. Ausborn bought a Packer's hat for $12. Mr. Doss bought a Viking's jersey for 6 times that amount. How much did Mr. Doss spend on the Vikings jersey?
$12 x 6 = $72 for the jersey
There are 16 fourth grade students in the art room. They need to be split equally between 4 tables. How many students will sit at each table?
16/4= 4 students per table
Mrs. Bettle has 5 library bins. Each bin has 6 books.
Mrs. Germundson has 2 library bins. Each bin has 5 books.
How many books are there in all?
Ms. B= 5x6=30
Ms. K= 2x5=10
30+10=40
7x_____=42
6
List ALL the factors for 24.
What is 1, 24 , 2, 12, 3, 8, 4, 6
What equation represents
"The green table has 7 times the amount of crayons than the 5 at the purple table"?
7x5=35 crayons
Kahler needed cookies for his birthday party. Cookies came in packs of 5. He has 40 people coming to his party. How many packs of cookies will he need?
40/5=8 packs of cookies.
Write a story problem to match the equation: 6x6=36
NA
_____ x 6 = 54
9