This document provides instructions for playing a multiplication bingo game. Students will be called multiplication questions and can cross off matching numbers on their bingo card if they answer correctly. The center space can be crossed off without answering a question. The goal is to be the first to complete a pattern of crosses specified by the teacher, such as a line or full card. Additional videos demonstrate the box method for multiplying two-digit numbers by expanding them into place value form and multiplying the components in a grid.

2. 2x2 Multiplication
The "Box" Method

3. Expanded
form
1
2
3

4. 1
2
3

6. Draw the given grid
● Randomly write
● 40, 54, 3, 64, 42, 24, 15, 27, 1,
20, 12, 6, 49, 14, 4, 35, 25, 30,
21, 72, 18, 16, 10, 28.
● Instructions •
● Your teacher will call out multiplication
questions. • You must quickly calculate the
answers to the questions. • If an answer
matches any of the numbers on your bingo
card, you may cross that number with a cross.
• The middle space may be covered with a
cross without answering a question. • To win,
your crosses must be in a pattern that is
specified at the beginning by your teacher
(e.g. line, x, full card

9. https://www.youtube.com/watch?v=fABwwE5YXO8

15. Sample Problem: 36 x 42
Step 1: Write both numbers in expanded form, one
set across the top, the other down one side.
30 6
40
2

16. Sample Problem: 36 x 42
Step 2: Locate where each number meets inside
box #1. Multiply the two numbers.
30 6
40
2
1,200
Strategy: Multiply the basic fact, then add the zeroes. 40 x 30 -> 4x3=12 plus 2 zeroes = 1,200

17. Sample Problem: 36 x 42
Step 3: Locate where each number meets inside
box #2. Multiply the two numbers.
30 6
40
2
240
Strategy: Multiply the basic fact, then add the zeroes. 40 x 6 -> 4x6=24 plus 1 zero = 240

18. Sample Problem: 36 x 42
Step 4: Locate where each number meets inside
box #3. Multiply the two numbers.
30 6
40
2 60
Strategy: Multiply the basic fact, then add the zeroes. 30 x 2 -> 3x2=6 plus 1 zero = 60

19. Sample Problem: 36 x 42
Step 5: Locate where each number meets inside
box #4. Multiply the two numbers.
30 6
40
2 12
Strategy: Multiply the basic fact, then add the zeroes. 2 x 6 -> 2x6=12 plus no zeroes = 12

20. Sample Problem: 36 x 42
Step 6: Add the 4 numbers from each box together.
30 6
40
2 12
1,200 240
60
1,200
240
60
12
1,512
1

21. 36 x 42 = 1,512
Step 7: Bask in your awesomeness.

22. ● https://www.youtube.com/watch?v=n3q3XzzIGSY

28. Lets recap

30. Multiplication 2 digit by 2 digit grid method
● https://www.youtube.com/watch?v=4exh3iBGroA

31. 45
X32

32. First… you want to pretend that you are doing two digit by one
digit multiplication. I like to cover the digit.
45
X32

33. Second… Follow the steps when multiplying. Two X Five is Ten,
so you would write the zero and carry your one.
45
X32
0
1
9
0
5
1
13
+
144 0
Now we clean house!
You will ALWAYS place a zero in the
ones place when moving on to the
tens place. But first, you want to erase
the numbers you carried.
We can now move on to the tens place.
Now place a zero in the units place as we
are multiplying a number in the tens place.
So any !
Now add your two sums to get the product!