module 2.5 extending the count-on addition strategy to two-digit numbers

Module 2.5 Extending the Count-On Addition Strategy to Two-Digit Numbers

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What helped you figure out the sequence? How is counting by 20s the same as counting by twos? How is it different? Counting by 20s is the same as counting by twos except that tens are used instead of ones. Start at 10 and count by 20s. Extending the Count-On Addition Strategy to Two-Digit Numbers

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Module 2.5

Extending the Count-On Addition Strategy to Two-Digit Numbers

Start at 24 and count by 2s.

Start at 48 and count by 2s

Start at 33 and count by 2s

Start at 51 and count by 2s

Start at 20 and count by 20s

Extending the Count-On Addition Strategy to Two-Digit Numbers

What helped you figure out the sequence?

How is counting by 20s the same as counting by twos?

How is it different?

Counting by 20s is the same as counting by twos except that tens are used instead of ones.

Start at 10 and count by 20s.

Extending the Count-On Addition Strategy to Two-Digit Numbers

What helped you figure out the sequence?

How is counting by 20s the same as counting by twos?

How is it different?

Counting by 20s is the same as counting by twos except that tens are used instead of ones.

Start at 10 and count by 20s.

Extending the Count-On Addition Strategy to Two-Digit Numbers

What is the total?

What can help you figure out the total?

Skip count

Add the tens places together

Extending the Count-On Addition Strategy to Two-Digit Numbers

What is the total?

What can help you figure out the total?

Skip count

Add the tens places together

Extending the Count-On Addition Strategy to Two-Digit Numbers

What is the total?

What can help you figure out the total?

Skip count

Add the tens places together

Extending the Count-On Addition Strategy to Two-Digit Numbers

What is the total?

What do you know about adding tens that could help you figure out the total?

Counting by 10s from 43

Add the tens places together first then add the ones

Use a hundreds chart

Extending the Count-On Addition Strategy to Two-Digit Numbers

What is the total?

What do you know about adding tens that could help you figure out the total?

Counting by 10s from 43

Add the tens places together first then add the ones

Use a hundreds chart

Extending the Count-On Addition Strategy to Two-Digit Numbers

What is the total?

What do you know about adding tens that could help you figure out the total?

Counting by 10s from 43

Add the tens places together first then add the ones

Use a hundreds chart

Extending the Count-On Addition Strategy to Two-Digit Numbers

What is the total?

What do you know about adding tens that could help you figure out the total?

Counting by 10s from 43

Add the tens places together first then add the ones

Use a hundreds chart

Extending the Count-On Addition Strategy to Two-Digit Numbers

How could you figure out the total?

Extending the Count-On Addition Strategy to Two-Digit Numbers

How could you figure out the total?

Extending the Count-On Addition Strategy to Two-Digit Numbers

How could you figure out the total?

Extending the Count-On Addition Strategy to Two-Digit Numbers

How could you figure out the total?

Extending the Count-On Addition Strategy to Two-Digit Numbers

How could you figure out the total?

Extending the Count-On Addition Strategy to Two-Digit Numbers

Page 19: Module 2.5 Extending the Count-On Addition Strategy to Two-Digit Numbers

Page 20: Module 2.5 Extending the Count-On Addition Strategy to Two-Digit Numbers

Page 21: Module 2.5 Extending the Count-On Addition Strategy to Two-Digit Numbers

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