Multiply Two Digit by Two Digit Regrouping

4-10

• Multiply Using Regrouping, Check If Answer Is Reasonable

• .

4-5

• Array and Partial Products

• .

4-6

• Distributive Property

• .

4-7

• Partial Products to Multiply 2-digit Numbers

• .

What is step 2?

• 5 x 4 = 20 bring down the 0 and place the 2 above the 1 in the hundreds place

• 5 x 1= 5 write it next to the 6

• 5 x 4 = 20 +1 = 21 bring down the 1 and place the 2 above the 1 in the hundreds place

pg 121 11

3 7

X 2

____

____

1 8

x 3

_______

_______

4-9

• Multiply with Regrouping

• .

15 x 9 =

• 145

• 160

• 45

• 135