Multiplication 10s, 100s, 1000s
10 x 18
180
56 x 2
112
125 x 3
375
5,710 x 2
11,420
What is our first step when multiplying by 2-digit, 3-digit, and 4-digit numbers?
Break the bigger number down into expanded form
10 x 145
1,450
82 x 4
328
852 x 4
3,408
4,201 x 2
8,402
Whenever you are multiplying by 10s, 100s, or 1000s what is the first step?
MOVE THE ZEROS
100 x 567
56,700
97 x 7
679
743 x 5
3,715
2,947 x 3
8,841
Marley is packing boxes with cans of paint to be used with an art project. She has 80 cans of paint, and each box holds 8 cans of paint.
Marley packed 6 boxes and needs to know how many cans of paint she has left.
80 - (8 x 6) =
32 cans of paint
100 x 7695
769,500
69 x 8
552
511 x 6
3,066
8,453 x 6
50,718
A display at a store contains 5 rows of 24 fruit drink bottles and 8 rows of 12 water bottles. How many fruit drink and water bottles does the display contain?
216
1000 x 2000
2,000,000
25 x 9
225
654 x 8
5,232
5,849 x 9
52,641
A playhouse on a school's playground has 2 levels. The first level is 8 feet off the ground, and the second level is 12 feet higher than the first level. A tree on the playground is 2 times as tall as the playhouse. How many feet tall is the tree?
____ + ____ = _____ x 2 =
40