Multiplication Strategies
Volume
Expressions
Factors & Multiples
Division
100
What strategy are we using?
5x7x2 = (5x2)x7
Reorder or Regroup
100
What is the volume formula?
V= l x w x h
V = length x width x height
100
If I tell you to write an expression, do you need to solve it?
NO
100
What is a prime number?
A number that has exactly 2 factors: itself and 1
100
What is a quotient?
The answer to a division problem.
200
What strategy are we using?
24x15 = (20x15) + (4x15)
Partial Product
200
What is volume measured in?
Cubic Units or units3
200
Write an expression for:
27 times 10 minus 45
27x10-45
200
Name all the factors of 24.
1, 2, 3, 4, 6, 8, 12, 24
200
I bought 12 balloons to put in 4 classrooms for the last day of school. How many balloons will go in each class room?
3 balloons
300
Fill in blank.
24x8 = ___ x 16
12
300
What is the volume?
4x3x2= 12 units3
300
Write an expression for:
I doubled 13 and halved 8.
13x8= 26x4
300
Name 3 multiples of 12.
12, 24, 36, 48, etc.
300
25 kids show up for soccer tryouts. We need to split them into 3 groups. How many kids should go in each group?
8 kids in groups #1 and #2, 9 kids in group #3
400
What is another way to write:
(100x14) - (1x14) =
99x14=
400
How do you find the volume of a composite figure?
Answers vary:
Break figure down into different rectangular prisms. Find the volume of each prism. Add up the sums of all prisms.
400
Write an expression for:
To find 101 x 17, I find 100x17 and add one group of 17.
101x17 = (100x17) + (1x17)
400
Name all the factors of 36.
1, 2, 3, 4, 6, 9, 12, 18, 36.
400
Fifth grade had a fundraiser and made $65 to split equally between 4 classroom. How much money should go to each class?
$16.25 to each
500
Solve using Half 10.
5x16=
10x16= 160
160/2 = 80
500
Find the volume.
5x4x1= 20
1x2x2= 4
20+4= 24 units3
500
Write an expression for:
To find 26x7, I doubled and halved.
26x7=13x14
500
Name 4 multiples of 15.
15, 30, 45, 60, 75, etc.
500
75 people came to a restaurant. They are sitting at tables that hold 6 seats per table. How many tables can hold the 75 people?
13 tables is enough to fit 75 people (3 seats open)