Multiplication
7
x 3
_____
21
___ x 2 = 12
6
16 = ______ x 2
8
Look on the board. I got mud on my homework. How many total stars are there. Explain your thinking.
12 star There are 2 rows and 6 columns ,so 2 x 6 = 12.
5
x 6
____
30
4 x 9 =
36
Explain how you can use 2 x 8 to find 4 x 8.
The Doubles-Doubles strategy works here. I know that 2 x 8 is 16 , and I can just double that to get 4 x 8 because 4 is 2 + 2.
Look on the board. How many windowpanes are there in the window? How do you know? Explain your reasoning.
20 windowpanes.
There are 5 rows and 4 columns, so 5 x 4 = 20.
10
x 5
____
50
3 x 8 = ________
24
There are 4 dog collars for $4 each.
How much do all 4 collars cost together?
Write a multiplication equation.
$16
4 x 4 = $16
Look at the board. How much does this sheet of stamps cost?
12 cents.
3,6,9,12
4
x 10
____
40
8 x 5 = 5 x ______
8
Four bags of dog food cost a total of $12.00
How much does each bag cost?
Write a division equation for this problem?
$3
12 / 4 = $3
Look at the board. If the small fish is 5 inches long, about how long is the large fish? How do you know? Explain your thinking.
About 10 inches. The larger fish is about two times as big as the small fish.
2 x 5 = 10
4
x
______
20
5
6 x 2 = ______ x 4
3
Ava says, "I found 4 x 5 is 20 because I doubled from 2 x 5 = 10." Do you agree with Ava? Why or why not?
Ava is correct because 4 x 5 is doubled from 2 x 5.
Look at the board. Fill in the missing numbers
Look at the board.