9 x 4 =
9 x 4 = 36
28 / 4 =
28 / 4 = 7
A factory packs 4 math books in each box. They packed 4 boxes. How many books did they pack?
4 x 4 = 16 books
16 / 4 =
4 x __ = 16
16 / 4 = 4
4 x 4 = 16
The property that says when any number is multiplied by 1, the product is that number.
Identity Property of Multiplication
3 x 6 =
3 x 6 = 18
21 / 3 =
21 / 3 = 7
There are 27 pieces of luggage on a plane. If each passenger brought 3 pieces of luggage, how many passengers are on the plane?
27 / 3 = 9 pieces of luggage
24 / 3 =
3 x __ = 24
24 / 3 = 8
3 x 8 = 24
A fact you have memorized.
1 x 7 =
1 x 7 = 7
32 / 4 =
32 / 4 = 8
There are 4 vans. How many students can the vans transport if each van holds 9 students?
4 x 9 = 36 students
20 / 4 =
4 x __ = 20
20 / 4 = 5
4 x 5 = 20
multiplication and division undo each other - this is called ____________
inverse operations
9 x 0 =
9 x 0 = 0
0 / 5 =
0 / 5 = 0
There are 4 pies. There are 9 pieces in each pie. How many total pieces of pie are there?
4 x 9 = 36 pieces of pie
6 x 6 =
36 / __ = 6
6 x 6 = 36
36 / 6 = 6
to take a number apart
decompose
24 x __ = 0
24 x 0 = 0
8 / 8 =
8 / 8 = 1
There are 5 oranges in each basket. Layla has 4 baskets. Each basket costs $5. Write a multiplication sentence to show the total number of oranges.
Write the extra information that was not needed.
Each basket costs $5.
Write an addition sentence to help find the product.
6 x 1 =
1 + 1 + 1 + 1 + 1 +1 = 6
The property says that when you multiply a number by 0, the product is zero.
Zero Property of Multiplication