A night in the life of...Detective Decimal

That’s me

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Hmmm....

The footprints are running out…we need a clue

Can you help me find a clue? Click on the clue when you see it.

Clue

http://youtu.be/m4sR3c13v5g

Question number 1:

Which is the biggest decimal?

0.3 0.4

HELP

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Question number 2:

Which is the biggest decimal?

1.25 1.6

HELP

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Question number 3:

Which is the biggest decimal?

1.9 1.12

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Question number 4:

Which is the biggest decimal?

1.29 1.26 1.8

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Now it’s going to get harder. Question number 5:

Which is the biggest decimal?

1. 08 1.7

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Question number 6:

Which is the biggest decimal?

3.073 3.72

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This will really test you. Question number 7:

Which is the biggest decimal?

1.9 1.09 1.19

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CORRECT!

You got lucky. But I will keep my promise. I will remove one of the ties from Detective Decimal.

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To save Detective Decimal you will have to do a bit more than that..

Continue

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CORRECT

But that was too easy...I might untie Detective Decimal, but you’ll have to answer a few more questions that that.

Continue

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CORRECT

You’re getting good...but still not enough

Continue

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CORRECT

Wow! I didn’t think you would get that correct. I suppose I have to untie a little bit more of Detective Decimal.

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Your getting closer to freeing him...but I’m sure you won’t be able to answer the next questions..they are tricky!

Continue

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CORRECT

Continue

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CORRECT

Continue

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CORRECT

I can’t believe you got all of the questions right! Well, I suppose I must keep by promise

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I’M FREE!!!!!!!!!

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Thank-you for saving me! You have shown me you are a very skilled detective. I have a reward for you.

Reward

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Your very own detective license.

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The End

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I think you made need some help. But pay attention. You can’t get help all the time

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This here represents 1 unit. Lets chop it up into 10 smaller pieces

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Each smaller piece is 1/10 the size (10 smaller pieces fit in to the larger piece)

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We call these pieces TENTHS

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When we write a decimal, we write the whole number before the decimal point and the tenths after the decimal point. For example:

0.3 0.4

3 is in the tenth column-3 tenths

4 is in the tenth column-4 tenths

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Let’s create 0.3 and 0.4.

0.3 is 3 tenths, so we need 3 of the smaller tenth pieces

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0.3

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0.4 is 4 tenths, so we need 4 of the smaller tenth pieces

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0.4

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0.3 has 3 tenths, and 0.4 has 4 tenths.

0.3 0.4

So, which is the bigger decimal?

0.3 0.4

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Ok, I will give you some more help.

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This here represents 1 unit. Lets chop it up into 10 smaller pieces

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Each smaller piece is 1/10 the size (10 smaller pieces fit in to the larger piece)

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We call these pieces TENTHS

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Let’s chop the tenth into 10 smaller pieces.

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These smaller pieces fit in to the tenth piece 10 times

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We call these pieces HUNDREDTHS

Hundredths are 10 times smaller than tenths

TenthHundredth

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In a decimal, the hundredths occupy the column after the tenths column (2 places after the decimal point.

1.25 1.6

2 is in the tenth column

6 is in the tenth column-1 and6 tenths

5 is in the hundredth column-1 and 2 tenths and 5 hundredths

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Let’s create 1.25 and 1.6

For 1.25, we need 1 whole unit, 2 tenths and 5 hundredths

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1. 2 5

.Next

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For 1.6, we need 1 whole units and 6 tenths

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.

1. 6 Next

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. .1.25 1. 6

So, which is the bigger decimal?

1.25 1.6

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Help again? Ok, but this is the last time...

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Let’s start by creating the decimals.

1.08 has 1 whole unit, 0 tenths and 8 hundredths

1 . 0 8

1 whole unit 0 tenths (No tenths)

8 hundredths

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1. 0 8Home

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1 . 7

1 whole unit 7 tenths

1.7 has 1 whole unit and 7 tenths

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1. 7Home

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1.08 1.7

So, which is the bigger decimal?

1.08 1.7

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Next

WRONG!

I will keep Detective Decimal chained up..unless you dare to try again...

Try again