Subtracting Four-Digit Numbers
Learning Objective
I can subtract four-digit numbers with regrouping.
Key Concepts
The standard subtraction algorithm involves lining up two numbers with each place value aligned and subtracting, starting in the ones place.
It is important to put the larger number on top in subtraction to avoid negative numbers and to make borrowing easier.
To check your answer in subtraction, add the difference to the subtrahend; it should equal the minuend.
Practice Questions
This lesson includes 3 practice questions to reinforce learning.
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1. Why is it important to line up the numbers correctly when using the standard subtraction algorithm?
2. Solve the following subtraction problem. You may need to borrow. 6,352 - 2,175 = ?
3. In the subtraction problem 8,456 - 3,219 = 5,237, which number is the subtrahend?
Educational Video
Multi-Digit Subtraction | Using the Standard Algorithm
Doodles and Digits | Educational Math Videos