PH02783J.JPG (151789 bytes) Zero Hero

I love to eat chocolate!



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I ate some of my candy, but I don't want to run out.  How can I find out how much candy I have left?


wpeD.jpg (9056 bytes)

Type a sentence in the box that tells how to find out how many pieces of candy I have left.

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There were 200 pieces of chocolate candy in my bag. I ate 37 pieces. How many are left?

200
- 37
??

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wpeB.jpg (12860 bytes) I know how to subtract most numbers, but I don't know how to subtract from zero! Will you help me?

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Step 1: Step 2: Step 3: Step 4:

sub200c1.gif (1897 bytes)
Regroup the hundreds to make 1 hundred and 10 tens.

sub200d.gif (2263 bytes)

Regroup the tens to make 9 tens and 10 ones.

 
         sub200big.gif (3594 bytes)
         Subtract the ones.
                 Subtract the tens.
           
Last, subtract the
                         
hundreds.


sub200pur.gif (2157 bytes)
 
             
Type the whole answer
in the box.

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There are 400 pages in the book I’m reading. I’ve read 326. How many more pages do I have to read?

400
-326

If I think about regrouping, I can subtract this!

wpeD.jpg (14891 bytes)

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Step 1: Step 2: Step 3: Step 4:

step1-sub400e.gif (1965 bytes)
Regroup the hundreds to make 1 hundred and 10 tens.

step1-sub400f.gif (1907 bytes)

Regroup the tens to make 9 tens and 10 ones.

 
    400big1.gif (4015 bytes)
         Subtract the ones.
                 Subtract the tens.
            Last, subtract the
                         
hundreds.

step1-sub400f.gif (1907 bytes)

 
             
Type the whole answer
in the box.

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Now it is your turn to subtract across zero. Look carefully at the example and you can do it!
You need to get your paper and pencil first.

Type the answer under the problem.

600
-239
 

 

Example

   step1-sub400g.gif (2509 bytes)       



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Now subtract this one. Look carefully at the example and you can do it!
Use your paper and pencil to find the answer.

Type your answer in the box.

300
-232
         
 

Example

    step1-sub400g.gif (2509 bytes)

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This one is a little tricky. Look to be sure you need to regroup.

You still need to use your paper and pencil. 
                                      
AG00090_.GIF (517 bytes)
                                                    300
                      -140
                
 

 

 

Click on the  button if you need help.


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Are you still using your paper and pencil? 
Good! 

Click on the  button if you need a hint.

Now subtract this one. Regroup exactly the same way. Don’t let all those zeros trick you.

5,000
- 232

                

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wpeB.jpg (15105 bytes) AG00290_.GIF (11028 bytes)

You win the prize as the Zero Hero!

 
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