longer multiplication! (2 digit x 2 digit)

Longer Multiplication!

(2 digit x 2 digit)

Thank you Maclaine, for asking,“What do you mean by longer

multiplication, Mrs. Cole?”

Here’s an example: How do we solve a problem like this?

3627

Steps 1 - 4, Same As Before!

4

3627 2

7 x 6 = 42

Steps 1 - 4, Same As Before!

4

3627252

7 x 3 = 21

(21 + 4 = 25)

Uh-oh! What next?

4

3627252 0

Cross out what you carried, so you don’t

get mixed up!

X

Put a 0 underneath the ONES column!

Reed…

What number should you put under the ones column?

That’s right…a ZERO! (0)

Step 5: Multiply the TENS and ONES column

1 4

3627252 20

X 2 x 6 = 12

Step 6: Multiply the TENS and TENS columns

1 4

36 27 252 720

X

2 x 3 = 6

(6 + 1 = 7)

Step 7: Add Your Answers

1 4

36 27 252 +720 972

X

Final Answer:

36 x 27 = 972

Step 8: Check Your Answer

Is it reasonable?

Estimate (round both numbers) 36 x 27 = 924 40 x 30 = 1200

Redo the problem

Your turn…

83 x 57 =

The answer is…

4,731

Try this…

43 x 25 =

The answer is…

1,075

Last one…

96 x 17 =

The answer is…

1,632

CONGRATULATIONS!!

You’re a multiplication…

SUPER STAR!!