1
2
4
5
10
100
1*6
6
100
2*7
14
100
4*4
16
100
5*5
25
100
10*0
0
200
1*9
9
200
2*6
12
200
4*9
36
200
5*7
35
200
10*3
30
300
1*100
100
300
There are 2 groups of 8 kids. How many kids are there in all?
16
300
4*1 uses which property?
Identity
300
5*9
45
300
10*8
80
400
1*5
5
400
10*2
20
400
4 groups of elves are packing up Santa's sleigh. If there are 2 elves in each group, and each one weighs 4 pounds, how much do all the elves weigh?
32 pounds. 4 groups * 2 elves = 8 elves 8 elves * 4 pounds = 32
400
There are 5 groups of students. If each group has 10 students, how many students are there all together?
50
400
10*10
100
500
1*0 uses which property?
Zero property
500
There are 9 groups of 2 turkeys. Each turkey costs $2 per pound. How many turkeys are there?
18
500
4 turkeys are getting ready to eat their thanksgiving dinner. Each turkey has 5 feathers. How much do all the turkeys weigh?
Can't solve, need weight
500
There are 70 Pilgrims going on the Mayflower. There are 10 rooms on the ship. If 5 Pilgrims fit into each room, how many Pilgrims have to sleep outside?
20 Pilgrims 10 rooms * 5 Pilgrims = 50 70 Pilgrims - 50 Pilgrims = 20
500
Commutative property definition
The order in which the numbers are multiplied does not affect the product (answer)
M
e
n
u