Class 1 Exam > Class 1 Notes > Abacus > Worksheet: 10’s Compliment-Single Digit Sums- 1
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Page 1 10’s Compliment-Single Digit Sums 3 1 9 10 -1 3 7 10 -4 5 5 11 -8 7 8 11 -2 8 8 12 -3 2 8 10 -2 4 9 10 -3 6 9 11 -7 7 5 12 -9 8 7 13 -4Read More
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FAQs on Worksheet: 10’s Compliment-Single Digit Sums- 1 - Abacus - Class 1
| 1. What is the 10's complement method and how is it used in single-digit sums? |  |
Ans. The 10's complement method is a technique used to simplify the process of subtraction by converting it into addition. In this method, the 10's complement of a number is found by subtracting each digit from 9 and then adding 1 to the least significant digit. When dealing with single-digit sums, this method helps in quickly solving problems by providing an alternative way to perform calculations without carrying over.
| 2. How do you calculate the 10's complement of a single-digit number? | |
Ans. To calculate the 10's complement of a single-digit number, you subtract the digit from 10. For example, if the number is 3, the 10's complement would be 10 - 3 = 7. This helps in performing subtraction using addition instead.
| 3. Can you provide an example of using 10's complement for a single-digit sum? | |
Ans. Certainly! Let's say we want to subtract 4 from 9. First, we find the 10's complement of 4, which is 6 (10 - 4). Next, we add this complement to 9: 9 + 6 = 15. Since we are working with single digits, we only take the last digit, which is 5. Thus, 9 - 4 = 5, confirming our calculation.
| 4. What are the benefits of using the 10's complement method in arithmetic operations? | |
Ans. The benefits of using the 10's complement method include simplifying calculations, reducing the need for carrying over, and making subtraction easier by converting it to addition. This method is particularly helpful in mental arithmetic and can enhance speed and accuracy in solving problems.
| 5. Are there any limitations to using the 10's complement for single-digit sums? | |
Ans. Yes, there are limitations. The 10's complement method is primarily useful for subtraction and may not be as effective for addition or more complex calculations. Additionally, it is more applicable in contexts where subtraction is frequent, such as in programming or digital systems, rather than in basic single-digit arithmetic done manually.
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