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Abacus Lesson 9 // Addition -Complementary Numbers Respect to 5- ONE'S Column Video Lecture | Abacus Master Class:Become an Expert (English) - Personal Learning

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FAQs on Abacus Lesson 9 // Addition -Complementary Numbers Respect to 5- 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 that has been used for centuries to perform arithmetic calculations. It consists of a rectangular frame with rods or wires on which beads slide. The position of the beads represents different values, allowing users to add, subtract, multiply, and divide numbers.
2. How does the abacus help in learning addition?
Ans. The abacus helps in learning addition by providing a visual representation of numbers and their values. By sliding beads on the abacus rods, learners can physically see the addition process. This helps in understanding the concept of carrying over and helps in developing mental math skills.
3. What are complementary numbers with respect to 5 in the one's column?
Ans. Complementary numbers with respect to 5 in the one's column are pairs of numbers that add up to 5. For example, 3 and 2, or 4 and 1, are complementary numbers. In the abacus, when adding numbers in the one's column, if the sum is 5 or a multiple of 5, the beads can be moved directly without carrying over.
4. How can one practice addition using complementary numbers on the abacus?
Ans. To practice addition using complementary numbers on the abacus, start by representing the first number on the abacus using the beads on the rods. Then, for the second number, identify the complementary number with respect to 5 in the one's column and move the corresponding beads. Finally, count the remaining beads to find the sum.
5. What are the benefits of using the abacus for addition practice?
Ans. Using the abacus for addition practice offers several benefits. It helps in developing strong number sense, as learners can physically see and manipulate numbers. It enhances mental math skills by providing a visual representation of the addition process. Additionally, it improves concentration and focus, as learners need to carefully move the beads on the abacus rods.
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