Regrouping Ones as Tens in Math Models

The video tutorial introduces the concept of regrouping ones as tens using tens rods and ones units. It begins with a review of counting using tens rods and ones units, demonstrating how to count and regroup ones into tens. The tutorial includes practice problems to reinforce the concept and provides instructions for completing a worksheet. The key takeaway is understanding that ten ones can be regrouped into one ten, simplifying counting and calculations.

What does one tens rod equal to?

• 15 ones units

• 10 ones units

• 5 ones units

• 20 ones units

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CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

How many ones make a tens rod?

• 20

• 15

• 10

• 5

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CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

What is the result of adding one more ones unit to 26?

• 26

• 27

• 29

• 28

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CCSS.1.NBT.C.4

CCSS.2.MD.B.6

What is the purpose of regrouping in math?

• To increase the number of ones units

• To practice drawing

• To learn multiplication

• To make counting easier

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CCSS.2.NBT.B.7

What is the new number after regrouping 14 ones into tens and ones?

• 54

• 24

• 34

• 44

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CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

After regrouping ten ones into a tens rod, how many tens rods do you have in total?

• Three

• Four

• Two

• One

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CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

How do you visually represent regrouping on a worksheet?

• By coloring tens rods

• By erasing ones units

• By circling ten ones units

• By drawing arrows

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CCSS.2.NBT.B.7

If you start with three tens and twelve ones, what do you have after regrouping?

• Three tens and two ones

• Four tens and two ones

• Four tens and twelve ones

• Five tens and two ones

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CCSS.2.NBT.B.6

Can you regroup if you have more than nine ones?

• Yes

• Only if you have more than ten

• No

• Only if you have exactly ten

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CCSS.1.OA.A.1

What do you do with the tens rod after regrouping ten ones units?

• Add it to the tens count

• Leave it as is

• Exchange it for ones units

• Remove it from the count

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CCSS.2.NBT.B.7