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Grade 3  Mathematics
6.4 Subtraction  4 Digits
Method:
Start subtracting from the ones place.
If the subtrahend is lesser than minuend then we borrow 1 from tens place.
If the subtrahend is lesser than minuend in tens place then we borrow 1 from hundreds place.
If the subtrahend is lesser than minuend in hundreds place then we borrow 1 from thousands place.
Subtraction without regrouping:
Example 1
:
Question
Step 1
Step 2
Step 3
Step 4
Start from ones place 5 minus 5 is 0.
In the tens place, 3 minus 2 is 1.
In the hundreds place 4 minus 1 is 3.
In thousands place, 9 minus 5 is 4.
Answer: 4310
Example 2
:
Start from ones place 8 minus 6 is 2.
In the tens place, 9 minus 9 is 0.
In the hundreds place 9 minus 8 is 1.
In thousands place, 4 minus 2 is 2.
Answer: 2102
Subtraction with regrouping:
Example
:
Start from ones place 7 minus 2 is 5.
In the tens place 3 is less than 8, so 1 is borrowed from 0 which has borrowed 1 from 3. So the result in tens place is 13 minus 8 which is 5.
In the hundreds place 0 becomes 9, the result is 3.
In thousands place, 3 becomes 2 and the result is 1.
Answer: 1355
Directions:
Subtract the following.
Question 1:
673

646
Answer:
Question 2:
5681

1210
Answer:
Question 3:
7378

7051
Answer:
Question 4:
7544

6757
Answer:
Question 5:
4781

518
Answer:
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