Fluency
5 groups of 8
40
What factor is missing?
( 3 x 2 ) x 1 = __ x ( 2 x 1 )
3
( 3 x 2 ) x 1 = 3 x ( 2 x 1 )
Tommy has 6 rows of 4 cars. How many cars does Tommy have?
6 x 4 = 24 cars
Solve:
(4 x 3) + (4 x 1)
(4 x 3) + (4 x 1)
(12) + (4)
=16
8 groups of 9
72
2 x (3 x 3)
2 x (3 x 3)
2 x 9
=18
Bobby has 5 groups of 3 books on his desk. How many books does Bobby have?
5 groups of 3
5 x 3
15 books
Solve:
(2 x 5) + (5 x 5)
(2 x 5) + (5 x 5)
10 + 25
=35
9 groups of 3
27
What factor is missing?
1 x (3 x 4) = ( 1 x 3 ) x __
4
1 x (3 x 4) = ( 1 x 3 ) x 4
Sherri has 9 equal groups of 3 Hershey Kisses. How many Kisses does she have in all?
9 x 3 = 27 Hershey Kisses
Solve:
(3 x 3) + (3 x 2)
(3 x 3) + (3 x 2)
9 + 6
= 15
7 x 6
42
The Associative Property is also known as the ________ Property.
The Grouping Property
each, per, times, equal groups, array, product, factor
(Answers may vary)
Solve:
(2 x 9) + (2 x 6)
(2 x 9) + (2 x 6)
18 + 12
=30
20 x 7
140
Solve:
(2 x 2) x 2
(2 x 2) x 2
4 x 2
=8
If Alex skips 8 groups of 3 rocks each. How many rocks did he skip in all?
8 groups of 3
8 x 3 = 24 rocks in all
Draw this array: 6 x 7
Could this problem solve this array using the Distributive Property?
(6 x 3) + (6 x 7)
NO!
Remember to break apart 7. This problem could solve 6 x 7:
(6 x 3) + (6 x 4)
Are there any other ways to solve 6 x 7 using the Distributive Property?