Understanding Place Value

Unit : Understanding Place Value

Second Grade Mathematics , Ms. Sarah Jarrell

What is Place Value?

• Place value is the basis of our entire number system.

• This is the system in which the position of a digit in a number determines its value.

• Place value accounts for why numbers might be larger or smaller than other numbers.

Second Grade Mathematics , Ms. Sarah Jarrell

1 block = 1 (ones)

1 strip = 10 (tens)

1 grid = 100 (hundreds)

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Second Grade Mathematics , Ms. Sarah Jarrell

The first (3) places:

​So what number is represented here?

138 (one hundreds, three tens, eight ones)

​

1 block = 1 (ones)

1 strip = 10 (tens)

1 grid = 100 (hundreds)

​

Second Grade Mathematics , Ms. Sarah Jarrell

The first (3) places:

​So what number is represented here?

138 (one hundreds, three tens, eight ones)

Multiple Choice

Which group of blocks represents six?

Open Ended

How many blocks would I need to represent the number 4?

Multiple Choice

What number is represented here?

• 364

• 13

• 463

• 94

Open Ended

How many blocks and strips would I need to represent 43?

Draw

Draw the number 7.

Any Questions,

My Friends?

No question is too small or too large!

We can figure it out together!

If you don't want to ask out loud, come see me after class!

Second Grade Mathematics , Ms. Sarah Jarrell