Place Value

WALT - Add and subtract decimals to 3 decimal places

Recap - Place Value

1. How many hundreds are there in 2,547?
2. How many ten thousands are there in 425,654?
3. What is the value of the 4 in 72,470?
4. How many units are there in 29,864?
5. What is the value of the 8 in 246,985?
6. How many hundred thousands are there in 529,867?
7. How many tens are there in 2,098?
8. What is the value of 2 in 3,240?
9. How many ten thousands are there in 657,098?
10. What is the value of the 5 in 657,409?

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Now use the place value chart

Place these numbers into the place value chart on this link

1. 508,756
2. 329,874
3. 456,087
4. 300,900
5. 563,876
6. 261,847
7. 135,087
8. 293,948

Complete and download google drawings - Post onto your blog

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Moving into tenths hundredths and thousandths

Tenths, Hundredths and Thousandths

1. How many tenths are there in 576.968?
2. How many thousandths are there in 27.094?
3. What is the value of the 3 in 56.38?
4. How many hundredths are there in 293.94?
5. What is the value of the 4 in 239,495.23?
6. How many thousandths are there in the number 456,765.960?
7. What is the value of the 9 in 37.839?
8. How many hundredths are there in 534,968.34?

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Write these in number form

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1. Two hundred and fifty three thousand, nine hundred and sixty four point zero nine seven
2. Five hundred and forty two thousand and eight, point nine, nine, three
3. Six thousand, four hundred and twenty nine point eight, zero, seven
4. Four hundred and fifty three thousand, eight hundred and ninety four point three, seven, four
5. Seven hundred and sixty four point three, nine, two

Now let’s add some decimals!

Add using place value knowledge

1. 1.452 + 1.3 = (1.452 + 1.300) so… 0.400 + 0.300 = 0.700, 0.700 + 0.052 = 0.752, 1+1 =2 so… 2.752
2. Now have a go 3.25 + 0.075
3. 2.43 + 1.093
4. 18.25 + 0.099
5. 5.06 + 8.35
6. 9.44 + 1.702

Now that you’ve achieved this, you can now use algorithm by lining up the decimal points!

What’s the difference? (subtractions problems)

Don’t subtract - Add!

Example: What’s the difference between 23.17 and 18.65 (23.17 - 18.65)

18.65 + 0.35 = 19

19 + 4.17 = 23.17

4.17 + 0.35 = 4.52

The difference is 4.52

Now your turn

What’s the difference between…

a) 22.16 and 11.33

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b) 35.12 and 13.16

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c) 84.34 and 22.63

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d) 55. 78 and 34. 86

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The Number Conundrum - Decimals

Have a go at this activity decimal experts - see how well you go. Take a screenshot when you’ve completed activity and paste it on a slide below!

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The Number Conundrum - Decimals

Paste your pyramid here

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