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Place Value

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by

marwa zaim

on 13 December 2014

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Transcript of Place Value

Done by:Marwa Zaim
https://www.khanacademy.org/math/cc-fifth-grade-math/cc-5th-place-value-decimals-top/5th-cc-decimals-place-val/v/understanding-decimal-place-value-exercise
Internet Resources
POP QUIZ
2,2 2 2
2,000
200
20
2
The value of every digit depends on its place

Activity
The flat represents ones (1), the rod represents one tenth (0.1 or 1/10), the unit represents one hundredth (0.01 or 1/100).
1
10
100
.
0.1
0.01
Split up into 4 groups.
Each group will represent a decimal number, written on the board, using the grids.
Reading Decimals
The decimal number is formed of two parts: The whole part and the fraction part
The decimal point is read as
AND
.
Stress the "
th
" sound when reading a place in the decimal part (tenth, hundredth, .....).
The principle of Zero as place holder
Common Difficulties With Place Value
The decimal part is less than one whole.
Place value is the basis of our entire system
Represent Decimals Graphically
Materials
10x10 Grid papers
1 1 9 One and nineteen hundredths
0 0 8 Eight hundredths
1 3 6 One and thirty-six hundredths
0 7 Seven tenths
Activity
http://www.topmarks.co.uk/maths-games/7-11-years/place-value
Each student takes an empty place value chart.
Fill out the charts with the names of the place- value places.
Place the decimal numbers written at the board in the chart correctly.
Read each number you wrote.
Materials:
Place value charts
Full transcript