Directions: Using the digits 1 to 9, at most one time each, fill in the boxes so that you would not need to regroup when you subtract. Make sure your number is less than 63.
Extension: Explain why you do NOT need to regroup using your number.
What is a number you can take away from 3?
The student puts in a number less than 63 and contains a 0, 1, 2, or 3 in the ones place.
Source: Chase Orton
Does not come up as a PDF
63 – 51
63 – 32
I wonder if anyone from a middle school background wrote 63 – (-5). It meets the qualifications.
63-12, since there are less ones in 12 then 63 i do not have to regroup
63-41 would not require regrouping because the number to subtract has a value in both the ones and tens place that is less than the greater number. 1 < 3 and 4 < 6 This way no regrouping is required to solve the problem.
63-23. No need to regroup since there are two 3’s in the ones place that will give a 0 and in the tens place you have 6-2, which will give a 4
I need to make sure i am subtracting numbers less than the number in each place value.
Ones place must have a number that is the same or less value so you won’t have to rename/regroup
The number must be smaller than 63 and have a smaller number than 3 in the ones place in order to have no regrouping.
63-03 will not need regrouping because subtracting 3 form 3 in the ones place value gives a value of zero and leave 6 in the tens place
The numbers are smaller than the numbers in the tens and ones column.
No regrouping is required because the number on top is bigger or equal than the number that is being taken away.