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You know when you have to ungroup by when the top number is bigger than the bottom number that is when you have to ungroup.

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You know when you have to ungroup ifb you do not a

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i know when to ungroup like when the top or bottom number is bigger then the other so you subtract one ten for your tens

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When i ungroup a problem and it is subtraction i ungroup because i have to and if i had i problem that is hard i ungroup it because you will get the right answer i know because i ungroup all the t

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when it show the sigh or it say how many do i,you,they,her,him, have left. or you took

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I  can explain when to ungroup it

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I know When to ungroup I will use a ray to ungroup.

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i know wen to subtract  when i read  in the text and when i look at the sigh.

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because when you cant do an eqution example is the eqution is 321-137 start with the ones place1-7 you cant do that so go next place ungroup the 2 turn it to a 1

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in my opioin

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you will ungroup only if you start with the zero that is how i know how to do it or if it says how many left with the zero in the math problem.

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I know when you have to ungroup because in a sutraction problem you could all ready see if you have to ungroup or not.c

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I think you will see if your tens of ones need some more tens or ones but you can only ungroup the hundres and give some to the tens if the ten is a zero if it's not a zero you can't ungroup it and for your tens if your tens have enough or a little bit to much like if it's 9-2 and you will have extra tens you should cross out the ten and make it a 8 and give the other to your ones.

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i think you will if you have to ungroup probably it so if you had 56 subtract 40 so i will put 56

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so if i had 56 subtract 40 so i will put 56 on top and 40 on the bottom so 56-40 is 16

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you ungroup when it is subtraction because if it is no more ten is the tens place you got to take it from the hundreds and if it ain't no ones you take it from the tens because if the number you subtract you got to subtract from the number that have ones tens and hundreds.

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I know when to ungroup is when the big number because

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I can explain ungroup in subtraction because ungroup is - and subtraction is + i know that  because it is easy so say i was doing .