📚 Topic Summary
3-Digit Subtraction (No Regrouping) involves subtracting numbers where the digits in the ones, tens, and hundreds places of the smaller number are less than or equal to the corresponding digits in the larger number. This means you don't have to 'borrow' or 'carry over' any values, making the process straightforward. Understanding place value is key to mastering this skill!
For example, in the problem 543 - 121, you subtract 1 from 3 in the ones place, 2 from 4 in the tens place, and 1 from 5 in the hundreds place, giving you the answer 422.
🧠 Part A: Vocabulary
Match the term with its definition:
| Term |
Definition |
| 1. Difference |
A. The value of a digit based on its position in a number. |
| 2. Place Value |
B. The number being subtracted. |
| 3. Subtrahend |
C. The result of a subtraction problem. |
| 4. Minuend |
D. The number from which another number is subtracted. |
| 5. Digit |
E. Any of the numerals from 0 to 9. |
(Match: 1-C, 2-A, 3-B, 4-D, 5-E)
✍️ Part B: Fill in the Blanks
In a subtraction problem, the number we are subtracting from is called the ______. The number being subtracted is the ______. The answer we get is the ______.
(Answers: Minuend, Subtrahend, Difference)
🤔 Part C: Critical Thinking
Why is understanding place value important when performing 3-digit subtraction?