Multiplication one digit by two digits

 $8\ \times\ 45\ =$  

• 327

• 340

• 360

• I don't know how to do this.

Tags

CCSS.4.NBT.B.5

 $9\ \times\ 80\ =$  

• 72

• 702

• 810

• 720

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CCSS.4.NBT.B.5

 $5\ \times\ 38\ =$  

• 158

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• 180

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CCSS.4.NBT.B.5

 $6\ \times\ 30\ =$  

• 630

• 180

• 60

• I don't know how to do this.

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CCSS.3.NBT.A.3

 $7\ \times\ 40\ =$  

• 280

• 028

• 210

• I DON'T KNOW HOW TO DO THIS.

Tags

CCSS.4.NBT.B.5

 $30\ \times6\ =$  

• I don't how how to do this.

• 018

• 306

• 180

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CCSS.4.NBT.B.5

 $6\ \times\ 45\ =$  

• 245

• 270

• 645

• It's a lot, a whole lot!  ;)

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CCSS.4.NBT.B.5

 $8\ \times\ 80\ =$  

• 880

• 6408

• 640

• 604

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CCSS.4.NBT.B.5

 $5\ \times\ 95\ =$  

• 4525

• 2545

• 455

• 475

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CCSS.4.NBT.B.5

When we "chunk" a multiplication problem like this

 $71\ \times\ 6\ =$  what is our first step/operation?

• multiply the 6 times 70

• multiply the 6 times 1

• multiply the whole thing, 71 x 6

• I don't know how to chunk.

Tags

CCSS.4.NBT.B.5