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Abacus Lesson 25 // Subtraction-Complementary Numbers Respect to 10- ONE'S Column Video Lecture | Abacus Master Class:Become an Expert (English) - Personal Learning

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FAQs on Abacus Lesson 25 // Subtraction-Complementary Numbers Respect to 10- ONE'S Column Video Lecture - Abacus Master Class:Become an Expert (English) - Personal Learning

1. What is an abacus?
Ans. An abacus is a counting tool or device used for performing arithmetic calculations. It consists of a wooden frame with rods or wires, each containing a series of beads that can be moved back and forth. It is primarily used for addition, subtraction, multiplication, and division.
2. What is subtraction with complementary numbers respect to 10?
Ans. Subtraction with complementary numbers respect to 10 is a technique used to simplify subtraction calculations on an abacus. It involves finding the complementary number (the number that, when added to the given number, equals 10) and subtracting it from 10. This method makes subtraction easier and quicker on the abacus.
3. How do you perform subtraction using the abacus in the one's column?
Ans. To perform subtraction using the abacus in the one's column, you start by placing the minuend (the number being subtracted from) on the abacus. Then, find the complementary number for the subtrahend (the number being subtracted) with respect to 10. Move the beads representing the complementary number on the abacus, and then subtract the corresponding beads in the subtrahend's column. Finally, read the resulting difference from the abacus.
4. Why is it important to learn subtraction on an abacus?
Ans. Learning subtraction on an abacus is important for several reasons. Firstly, it helps develop a strong foundation in arithmetic and mental calculations. Secondly, it improves concentration, focus, and hand-eye coordination. Additionally, it allows for a deeper understanding of mathematical concepts and promotes problem-solving skills. Finally, it provides a visual and tactile approach to learning subtraction, making it easier for some individuals to grasp the concept.
5. What are some advantages of using an abacus for subtraction?
Ans. Using an abacus for subtraction offers several advantages. Firstly, it provides a physical representation of numbers, making it easier to visualize and understand the subtraction process. Secondly, it allows for quick and accurate calculations, especially when using techniques like complementary numbers. Additionally, it enhances mental math skills and improves overall numerical fluency. Lastly, it can be a helpful tool for individuals with learning difficulties or those who prefer a hands-on approach to learning mathematics.
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