Vocabulary
The _______________________ says that you can break-apart one factor from a multiplication problem to make two smaller multiplication problems to make it easier to multiply.
Distributive Property
What is the mistake with the following problem?
6 x 8 = (3 x 4) +(3 x 4)
6 x 8 = 12 + 12
6 x 8 = 24
They decomposed both the 6 and the 8. You can only decompose ONE factor.
3 x 6 = ?
18
1+5
2+4
3+3
What did Mr. Siebert dress up as for Halloween?
Waldo
When you _______ you break a number into parts using addition.
Decompose
(include a label)
24 dinosaur feet
3 x 8 = ?
24
What are the friendly factors that you want to decompose a number into if you can? (4 numbers)
1, 2, 5, 10
Who is Mr. Siebert's closest teacher friend at Hillside?
Mr. Hart
An ______________ is an arrangment of objects in rows and columns.
array
Yes. Mrs. Davis has 54 and Miss Baxter has 40
5 x 9 =?
45
What number makes the equation true?
3 x 7 = (3 x 2) + (3 x __)
5
What is Mr. Siebert's daughter's name?
Ava
Repeated addition, drawing an array, drawing equal groups, using decomposing, and skip counting are all strategies to solve a _______________ equation.
There are 4 groups of 5 desks in the room. There are 30 students in the class. How many more groups of 5 does there need to be in the classroom to have enough desks for every student.
2 more groups of 5 (10 more desks)
7 x 9 = ?
63
What is the missing number?
7 x ____ = (2 x 9) + (5 x 9)
9
What does Mr. Siebert say all the time about how much you should write when answering questions?
"The more you write, the better chance you get full credit"
-answer should be close to this. It doesn't have to be the exact words.
If you find a number that you don't know in an equation, you are finding the _____________.
For example 3 x __ = 18.
6 would be the _________ number in this equation.
unknown
Maeve has 4 packs of Skittles. Each pack has 8 Skittles in it. She gives 1 pack to Makaila and 1 pack to Noah. How many Skittles does Maeve have left now?
16 skittles
8 x 8 = ?
64
Use decomposing to solve the following multiplication equation: 8 x 6 =
You must explain fully how to decompose it and you must write the new equation on the board.
Answers may vary. MUST decompose the 8 OR 6
(48)
There are 4 different ways to break the 8 up.
There are 3 different ways to break the 6 up.
How many windows does the Empire State Building have?
6,514 windows