Transcript Document

How can you figure out the solution to a
multiplication fact when you can remember
the answer?
8 x 7 =
In this lesson you will learn another strategy
for solving multiplication facts
by breaking apart their arrays into more
familiar facts.
Let’s Review
8 x7 =
Core Lesson
1 2 3
8 x7 =
5 x 7 = 35
x
=
3
?
7
21
+
56
Core Lesson
8 x7 =
4 x 7 = 28
x
=
4
?
7
28
+
56
Core Lesson
87 x 78 =
5 x 8 = 40
x
=
2
?
8
16
+
56
A Common Mistake
7x8=
5 x 4 = 20
x
=
2
4
8
+
4 28
In this lesson you have learned to solve
multiplication facts...
by breaking apart their arrays into more
familiar facts.
Guided Practice
9 x6 =
5 x 6 = 30
x
=
4
?
6
24
+
54
Extension Activities
Solve the fact 6 x 9 by breaking apart the array by 9s
(use the
array for
help!)
Extension Activities
Solve the fact 7 x 6 by breaking apart the array by 6s
Extension Activities
Solve the fact 7 x 6 by breaking apart the array by 7s
Quick Quiz
Which of the following is not another way to solve
8x8=?
A. 5 x 8 = 40
+3 x 8 = 24
B. 4 x 8 = 32
+4 x 8 = 32
C. 2 x 8 = 16
+6 x 8 = 48
C. 2 x 4 = 8
+6 x 4 = 24
Quick Quiz
Which of the following is not another way to solve
6x7=?
A. 6 x 3 = 18
+6 x 4 = 24
B. 3 x 6 = 18
+4 x 6 = 24
C. 3 x 6 = 18
+3 x 1 = 3
C. 3 x 7 = 21
+3 x 7 = 21
Core Lesson
8 x 7=
10 x 7 = 70
-2 x 7 = 14
56