Multiply Two Digit by Two Digit Regrouping

4-10

• Multiply Using Regrouping, Check If Answer Is Reasonable

• .

Tags

CCSS.4.NBT.B.5

4-5

• Array and Partial Products

• .

Tags

CCSS.4.NBT.B.5

4-6

• Distributive Property

• .

Tags

CCSS.6.NS.B.4

4-7

• Partial Products to Multiply 2-digit Numbers

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Tags

CCSS.4.NBT.B.5

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

Tags

CCSS.4.NBT.B.5

pg 121 11

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

3 7

X 2

____

____

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CCSS.4.NBT.B.5

1 8

x 3

_______

_______

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CCSS.4.NBT.B.5

4-9

• Multiply with Regrouping

• .

Tags

CCSS.5.NBT.B.5

15 x 9 =

• 145

• 160

• 45

• 135

Tags

CCSS.4.NBT.B.5