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Abacus Lesson 27 // Subtraction-Complementary Numbers Respect to 10- HUNDRED'S Column Video Lecture | Abacus Master Class:Become an Expert (English) - Personal Learning

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FAQs on Abacus Lesson 27 // Subtraction-Complementary Numbers Respect to 10- HUNDRED'S Column Video Lecture - Abacus Master Class:Become an Expert (English) - Personal Learning

1. What is an abacus?
An abacus is a counting tool that consists of a frame with rods or wires on which beads can slide. It is used for performing arithmetic calculations, especially addition and subtraction.
2. How does an abacus work for subtraction?
To perform subtraction using an abacus, you can use the concept of complementary numbers. Complementary numbers are pairs of numbers that add up to a base value, in this case, 10. By using complementary numbers, you can easily subtract numbers on an abacus by adding the complement of the number you want to subtract, and then subtracting the desired number from the total.
3. What are complementary numbers respect to 10?
Complementary numbers respect to 10 are pairs of numbers that add up to 10. For example, 3 and 7 are complementary numbers because 3 + 7 = 10. Similarly, 4 and 6, 1 and 9, and so on, are complementary numbers.
4. How do you represent numbers in the hundred's column on an abacus?
In the hundred's column on an abacus, each bead represents a value of 100. The lower bead represents 100, the middle bead represents 200, the upper bead represents 300, and so on. By moving the beads up or down the rods, you can represent different numbers in the hundred's column.
5. Can an abacus be used for other mathematical operations?
Yes, an abacus can be used for other mathematical operations such as multiplication and division. However, these operations may require more advanced techniques and additional knowledge of abacus principles.
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