Hi everyone,
I am learning subtraction with my mom and I have found a problem that I cannot fix so I was told to figure it out. So my mom is writing this for me on the internet so we can get help from other people (maybe in a similar situation).
When I have a subtraction problem I rename the numbers (taking from the tens/hundreds) but sometimes my answer is 1 below the intended answer (checked with adding the found answer and the number given in the equation).
What is going on?
I am learning subtraction with my mom and I have found a problem that I cannot fix so I was told to figure it out. So my mom is writing this for me on the internet so we can get help from other people (maybe in a similar situation).
When I have a subtraction problem I rename the numbers (taking from the tens/hundreds) but sometimes my answer is 1 below the intended answer (checked with adding the found answer and the number given in the equation).
What is going on?
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561
-373
What he is attempting to do is:
1. You cannot take 1 from 3 so he is borrowing from the 6 (becoming 5) and having the 1 turn into a 10.
2. 10 - 3 = 7 (first spot filled)
-----^^
HERE is your error. When you borrow 1 from the 6, the 1 becomes 10 PLUS the 1 in the 1s column gives you
11 - 3 = 4 (first spot filled)
-373
What he is attempting to do is:
1. You cannot take 1 from 3 so he is borrowing from the 6 (becoming 5) and having the 1 turn into a 10.
2. 10 - 3 = 7 (first spot filled)
-----^^
HERE is your error. When you borrow 1 from the 6, the 1 becomes 10 PLUS the 1 in the 1s column gives you
11 - 3 = 4 (first spot filled)
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Where's the equation?
-
Not really sure--can you show some examples of when this has happened?
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Subtracting, say, 824 from 913
Subtract 4 form 3 ... you get a negative number (which you don't want), so you borrow a 10 from the 10's column
and you subtract 4 fro 13 = 9
Now you have 820 to be subtracted from 900
20 from 00 is a negative, so we borrow 100 from the hundred's column
2 from 10 = 8
and now we have 800 from 800 8 - 8 = 0
and so the answer is 89
Subtract 4 form 3 ... you get a negative number (which you don't want), so you borrow a 10 from the 10's column
and you subtract 4 fro 13 = 9
Now you have 820 to be subtracted from 900
20 from 00 is a negative, so we borrow 100 from the hundred's column
2 from 10 = 8
and now we have 800 from 800 8 - 8 = 0
and so the answer is 89