Multiplication
52 X 4
208
20 / 5
4
Prime or Composite?
3
Prime: 1, 3
Our classroom needs a new floor.
Our room is 28 meters long and 37 meters wide. How many square meters of flooring do we need to buy for our room?
(Draw an area model to solve)
Our class needs to buy 1,036 square meters of flooring.
What are the factors of 6?
1,2,3,6
82 X 5
410
72 / 9
8
Prime or Composite?
9
Composite: 1, 3 , 9
Ms. Huebner has 9 cases of crayons with 52 boxes in each case. How many total boxes of crayons does she have?
(Draw an area model to solve)
Ms. Huebner has 468 total boxes of crayons.
Is 2 a factor of 34?
Yes. 17
134 X 4
536
216 / 4
54
Prime or Composite?
12
Composite: 1, 2, 3, 4, 6, 12
Mrs. Smith bought 4 boxes of pencils for the 3rd, 4th and 5th grade. Each box has 88 pencils. If each grade splits the pencils equally, how many pencils will each grade get?
Each grade will get 352 pencils.
Is 12 a multiple of 3?
Yes. 3, 6, 9, 12
1, 234 X 3
3,702
525 / 5
105
Prime or Composite?
19
Prime: 1, 19
Of the 21 students in our class, each student will need 6 folders. Folders are sold in packages of 8. How many packages will we need to order?
We will need to order 16 packages of folders.
Complete the pattern of multiples by skip-counting:
9,__,27,__,__,54,__,__,__,__
9, 18, 27, 36, 45, 54, 63, 72, 81, 90
4,025 X 2
8,050
1,246 / 2
623
Prime or Composite?
24
Composite: 1, 2, 3, 4, 6, 8, 12, 24
Miss. Razon’s desktop has a surface area of 21 square feet. Samuel thinks the desk is 3 feet long and 7 feet wide. Xia thinks the desk is 7 ft long and 3 feet wide.
Who is correct?
Explain using an area model, picture and words.
They are both correct
What is the greatest multiple of 9 that is less than 60?
9, 18, 27, 36, 45, 54, 63.
54 is the greatest multiple of 9 that is less than 60.