Arrays
Solving for Missing Factor
Fluency Problems
Equal Groups
Vocabulary Terms
100
What are the multiplication equations for this array?
What is....
3x4 or 4x3
100
5x___=10
2
100
5x5=
25
100
Use equal groups to solve the problem below:
Ms. McMaster has 6 tables in her classroom. Each table will get 1 box of 5 pencils.
How many total pencils does Ms. McMaster have?
Ms. McMaster has 30 total pencils.
100
What is repeated addition?
Repeated addition is when you add the same number over and over again.
200
Create a 4x6 array. How many objects are there total in your array?
24 objects
200
10x____=50
5
200
10x7=
70
200
Use equal groups to solve this problem:
Mrs. York gives 5 tables 5 pieces of candy. How much candy did Mrs. York give out?
25 pieces of candy.
200
What is equal groups?
Equal Groups is a strategy to solve multiplication where you have certain number of groups with an equal amount of objects in each group.
300
What are the equations for this array?
9x3 or 3x9
300
10x___=100
10
300
5x9=
45
300
Create an equal group for the multiplication sentence 3x4.
or
300
What is a factor?
A number that is being multiplied.
400
True or false:
All objects in an array do NOT have to the same size.
False. Each object should be the same size.
400
6x__=48
8
400
9x10=
90
400
Use Equal Groups:
Olive Chapel Elementary has 8 collection bins. Each bin has 5 boxes of canned goods. How many boxes of canned goods does Olive Chapel have?
40 boxes.
400
What is a product?
The answer to a multiplication problem.
500
Create an array with a total of 30 objects.
Answers will vary:
3x10 10x3
5x6 6x5
500
7x____=49
7
500
4x6=
24
500
Use Equal Groups to solve this problem.
The third 3rd grade classes are going on a field trip. They will take a total of 4 buses. Each bus will hold 20 kids. How many total kids will be going on the field trip?
80 total kids.
500
What is the commutative property? And give an example.
The commutative property states that it does NOT matter the order of the factors or addends, you will still get the same answer when you multiply or divide.
Example: 5x1=5 ; 1x5=5