WALT:

Read and write decimals

The place of a digit tells you its value

Fill in the Place Value Chart

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1. Tom swam a length of the pool in 30.42 seconds
2. Angel ran 100m in 15.89 seconds
3. The bike track record for Year 7s is 44.271 seconds
4. The bike track record for Year 8s is 42.940 seconds

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Decimals in Expanded Form (words)

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EXAMPLE: 3.45 = three ones, four tenths and five hundredths

1. 5.7 =
2. 3.29 =
3. 0.83 =
4. 34.09 =
5. 0.072 =
6. 20.594 =

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Decimals in digits (numbers)

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EXAMPLE: three point four five = 3.45

1. four point zero seven =
2. eighty-two point four six nine =
3. fifty point zero two =
4. three point zero zero four =
5. eighteen thousand point six two =
6. forty five point nine zero zero

Write as Decimals

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EXAMPLE: nine tenths = .9

• five hundredths =
• eight tenths and five hundredths =
• nine thousandths =
• five tenths and two hundredths =
• four tenths and seven hundredths and three thousandths =
• two tenths and six thousandths =

CHALLENGE!

Rewrite each number using a decimal point so that the value of the 5 is 5 tenths�HINT: Look back at Slide 2 with the place value houses

1. 852 →
2. 365 →
3. 79652 →
4. 5321 →
5. 600509 →
6. 637521 →

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YOUR TURN!

• Use four cards to make up a four digit decimal number. Put your numbers in order like this:� the smallest digit in the tenths place� the biggest digit in the ones place� the second biggest digit in the thousandths place and� the last digit in the hundredths place
• Now you need to make up four clue cards to help your buddy work out what your number is�EXAMPLE:� Clue Card 1 The ones digit is ______� Clue Card 2 The thousandths digit is _____ more/less than the hundredths digit� Clue Card 3 The digits add to ______� Clue Card 4 The tenths digit is ______ more/less than the ones digit�Give the clue cards to a buddy and ask them to work out the number
• Take a photo of your clue cards and post to your blog with 2-3 sentences about �place value using decimal numbers