Expressions
Write 2 expressions that can be used to find 6 x 7
examples of correct responses:
4 x 7 and 2 x 7
5 x 7 and 1 x 7
Jordan used 2 facts to break apart a large array.
6 x 1 and 6 x 7
What was the large array that Jordan started with?
6 x 8
3 x 6 =
18
Mrs. Wernersbach makes the generalization that a 6s fact can be broken into two 3s facts. Write an equation to test this generalization. Be sure to solve the equation!
g x 6 = (g x 3) + (g x 3)
Find the number that makes the equation correct.
(2 x 5) + (5 x 5) = _____
35
Write 2 expressions that can be used to find 6 x 4
examples of correct responses:
1 x 4 and 5 x 4
3 x 4 and 3 x 4
Aziah used 2 facts to break apart a large array.
3 x 3 and 3 x 4
What was the large array that Aziah started with?
3 x 7
4 x 7 =
28
Ms. Chickerillo makes the generalization that a 3s fact can be broken into a 2s and 1s fact. Write an equation to test this generalization. Be sure to solve the equation!
g x 3 = (g x 2) + (g x 1)
Find the number that makes the equation correct.
(2 x 7) + (1 x 7) = _____
21
Write 2 expressions that can be used to find 7 x 5
examples of correct responses:
5 x 5 and 2 x 5
4 x 5 and 3 x 5
Samantha used 2 facts to break apart a large array.
2 x 8 and 2 x 8
What was the large array that Samantha started with?
4 x 8
8 x 8 =
64
Can a 7s fact always be broken into two 4s facts? Explain.
No, 4 + 4 is 8, not 7.
Find the number that makes the equation correct.
(3 x 5) + (5 x 5) = _____
40
Write 2 expressions that can be used to find 7 x 9
examples of correct responses:
5 x 9 and 2 x 9
3 x 9 and 4 x 9
Angel used 2 facts to break apart a large array.
4 x 7 and 2 x 7
Draw the large array that Angel started with and write a complete equation to match your drawing.
6 x 7 = 42
Drawing should show 6 rows of 7
9 x 6 =
54
Mr. Anthony makes the generalization that 8s facts can be broken into 5s and 3s facts. Write an equation to test this generalization. Be sure to solve the equation!
g x 8 = (g x 5) + (g x 3)
Find the number that makes the equation correct.
(7 x 4) + (7 x 4) = _____
56
Write 2 expressions to find 6 x 8.
examples of correct responses:
6 x 1 and 6 x 7
2 x 8 and 4 x 8
6 x 4 and 6 x 4
Adrian used 2 facts to break apart a large array.
5 x 8 and 2 x 8
Draw the large array that Adrian started with and write a complete equation to match your drawing.
7 x 8 = 56
Drawing should show 7 rows of 8
7 x 8 =
56
Make a generalization about 7s facts. Write an equation to show that your generalization is correct.
10s facts can be broken into some combination of numbers that add together to make 7.
6s and 1s facts
5s and 2s facts
4s and 3s facts
Find the number that makes the equation correct.
(8 x 5) + (8 x 4) = _____
72