Mr. Stark arranged Mrs. Commisso's classroom. He put the desks in three rows. Each row had five desks. What are the total number of desks?
3x5
5+5+5
15 desks!
100
2,4,6,8,10,12,14
7 groups of 2
7x2=14
100
9x2=
9+9=18
***** *****
**** ****
100
Product.
What is the answer to a multiplication problem?
100
A giant toad laid 1,000 eggs on Friday and 700 eggs on Sunday. How many eggs in all?
1,700 eggs!!!
200
Mrs. Pratt gave four preschoolers two cookies each. How many cookies in all did she give to the preschoolers?
4x2
2+2+2+2
8 cookies in all
200
5x5=
5 groups of 5
5,10,15,20,25
5x5=25
200
4x4=
4,16,20, 24
(4+4) + (4+4)
8 + 8 = 16
200
Factors
What are the numbers called that are being multiplied?
200
Blaine has $600. His grandfather gives him $600 more. Then he gets $600 more. How much does Blaine have?
$660!!!
300
Mrs. Bielby gave each of her three daughters nine dollars. What was the total amount of money she gave away?
3x$9
$9+$9+$9
$27
300
10, 20, 30, 40, 50, 60, 70, 80, 90, 10, 110
11 groups of 10
11x10=110
300
6x7=
6x5= 30 so 6x6=36. 6x7 is 6 plus 36. 6x7=42
******(count up )
6, 12, 18, 24, 30, 36, 42
300
array
What is it called when items are arranged into equal rows and columns?
300
Mikey has $10,000. He wants to buy a car that costs $57,000. How much more does he need?
Mikey needs $47,000!!
400
When Mr. Evangelist arrived at school there were seven cars in the parking lot. In each car there was one teacher. How many teachers did he see in all?
7x1=7
1+1+1+1+1+1=1
7 teachers
400
8x3=
8 groups of 3
3,6,9,12,15,18,21, 24
8x3=24
400
3x11=
***********
***********
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In times 11 if the other factor is below ten , both the tens and ones place will become the other factor.
3x11=33
400
Commutative Property of Multiplication
What is the property that says the order of numbers are multiplied will not change the product?
400
If Ms. Marenic was born on January 7, 1983. How old is she now?
She is 30 years old.
500
Mr. Enos was organizing after-school basketball games. He made four teams of twelve players. How many players did he have in all?
4X12
12+12+12+12
96 players
500
9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108
12 groups of 9
12 x9=108
500
9x9=
I can do the 9s trick with my hands.
I know that 9 x10= 90 so 9x9 is 9 less than that
(90-9=81)
9x9=81
500
A way to show all possible combinations using "branches".
What is a tree diagram?
500
Ms. Marenic has a pink leopard shirt, a glitter shirt, and
a neon shirt. She has a pair of blue jeans and a pair of black leopard pants. How many different outfits can Ms. Marenic create with these items?