# Place Value - PowerPoint PPT Presentation

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Place Value. Unit 3. Roman Numerals. I = 1 One V = 5 Five X = 10 Ten L = 50 Fifty C = 100 One-hundred D = 500 Five-hundred M = 1000 One-thousand. Answers. http://www.romannumerals.co.uk/. Place Value . Key Themes Whole Quantity Column/exchange. \$ 10, 609, 318.

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Place Value

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## Place Value

• Unit 3

### Roman Numerals

I = 1 One

V = 5 Five

X = 10 Ten

L = 50 Fifty

C = 100 One-hundred

D = 500 Five-hundred

M = 1000 One-thousand

• http://www.romannumerals.co.uk/

### Place Value

Key Themes

• Whole

• Quantity

• Column/exchange

\$ 10, 609, 318

\$ 3, 462, 141

\$1, 323, 835

\$6, 251, 514

\$ 3, 047, 362

\$1, 413, 395

\$879, 890

### Whole Amount

1) Number is complex involving size, manyness and numerosity

2) Brings the ordinal and cardinal aspects of numbers together

### Quantity

3) Place value can be considered from the perspective of ordering numbers and putting them in their relative positions

Place Value ITP

### Column

http://www.nsonline.org.uk/node/47754

Dienes Materials

### Key features of our place value system

• Uses the digits 0-9

• The column determines the value

• Each column is 10 times bigger than the one preceding it

For Claire’s session

Read Thompson, I. (2003) ‘Place value: the English disease?’ in Thompson, I. Enhancing Primary Mathematics Maidenhead: OUP

• Develop your understanding of ‘Quantity value’ and ‘Column Value’

• Consider why children need to understand both aspects of place value

• What does Thompson suggest is particularly difficult about ‘teens’ numbers?

For Clare’s session

• Discuss Place Value Audit with a partner/group