Using Skip counting what would the next number in this sequence be?
3, 6, 9, 12, 15, 18, 21,
24
200
What is a equation?
A number sentence example: 5x3 = 15
200
9 x 10
90
200
5 X 2 X 5
50
200
What 2 equations would you split 14 x 5 into?
10 x 4
4 x 5
200
What did this student do wrong when they multiplied the following numbers?
30 X 6 = 1800
They added an additional zero onto the problem
300
What is the commutative property?
Where you can change the factors in a problem and still get the same result.
300
13 x 10
130
300
3 X 7 X 1
21
300
What 2 equations would you split 23 x 2 into?
20 x 2
3 x 2
300
There are 11 kids making Jack O' Lanterns out of pumpkins. Each kid gets 3 pumpkins to use. How many Jack O' Lanterns can be made?
33 Jack O' Lanterns
400
What is a factor?
A number example: In the equation 3 x 6 =18
In this example 3 and 6 are factors.
400
27 X 10
270
400
10 X 4 X 10
400
400
What 2 equations would you split 67 x 5 into?
60 x 5
7 x 5
400
What did this student do wrong when they multiplied the following numbers?
30 X 6 = 1800
They added an additional zero onto the problem
500
What is the Associative Property?
The Associative property is when we take a 3 factor multiplication problem and group them two different ways to show the answer is the same: For example
(3 X 4) X 2 = 24 or 3 X (4 X 2) = 24
12 X 2 = 24 3 X 12 = 24
500
180 X 10
1800
500
6 x 5 x 10
300
500
What 3 equations would you split 121 x 2 into?
100 x 2
20 x 2
1 x 2
500
Use the Associative property to show me another way of writing this problem:
(2 X 3) X 4 = 24
6 X 4 = 24