CARA PEMBAGIAN BERSUSUN (POROGAPIT) YANG BENAR

Summary

In this video, the presenter explains the correct method for performing division, focusing on a technique called 'porogapit division.' Through clear, step-by-step instructions, the presenter demonstrates the errors commonly made in dividing multi-digit numbers, like 1449 by 7, and provides the correct approach. The division process is done one step at a time, breaking down each operation to avoid mistakes. The video encourages viewers to practice the method and confirms the accuracy of the results with sample checks. The presenter ends by offering practice problems for further learning.

Takeaways

• 😀 Proper division should be done one number at a time, not in pairs, for accurate results.
• 😀 An example of incorrect division: dividing 1449 by 7 using paired numbers leads to a wrong result of 27.
• 😀 To divide correctly, start by checking if the first digit is divisible by the divisor. If it's not, write zero.
• 😀 After subtracting, lower the next number down to continue the division process.
• 😀 Always check your result by multiplying the quotient by the divisor to verify accuracy.
• 😀 For division, after subtracting, ensure that you can lower the next number before continuing.
• 😀 Leading zeros in the quotient are insignificant and can be dropped.
• 😀 The correct result for 1449 divided by 7 is 207, as confirmed by multiplying 207 by 7 to get 1449.
• 😀 Another example: Dividing 420 by 4 requires dividing digit by digit, with appropriate subtraction after each step.
• 😀 Practice exercises are provided to reinforce understanding, and feedback is encouraged in the comments section.
• 😀 The video aims to teach the correct method for dividing porogapit, ensuring clarity for viewers.

Q & A

What is the correct way to perform stacked division or 'porogapit' division?

The correct way to perform 'porogapit' division is by dividing one digit at a time, rather than trying to divide multiple digits at once.

Why is it important to divide one digit at a time in 'porogapit' division?

Dividing one digit at a time ensures accuracy in the division process, as attempting to divide multiple digits at once can lead to incorrect results.

What mistake did the speaker demonstrate using the example of 1449 divided by 7?

The speaker showed a common mistake where dividing 1449 by 7 incorrectly by taking two digits at once (14 divided by 7) led to a wrong result of 27.

How did the speaker correctly divide 1449 by 7?

The speaker divided 1449 by 7 by first writing the answer with 4 digits, then divided one digit at a time—starting with 1 divided by 7 (resulting in 0), then dividing 14 by 7 (resulting in 2), followed by 4 divided by 7 (resulting in 0), and finally 49 divided by 7 (resulting in 7), giving the correct answer of 207.

What happens if there is a leading zero in the answer, as shown in the 1449 ÷ 7 example?

The leading zero in the answer has no value and can be discarded. For example, the answer 020 is simplified to 207.

How does the speaker suggest verifying the result of a division?

The speaker suggests multiplying the obtained answer by the divisor to check if it matches the original number. For example, multiplying 207 by 7 results in 1449, confirming the correct division.

What was the second example given by the speaker, and how was it divided?

The second example was 420 divided by 4. The division was done step by step: dividing 4 by 4 (resulting in 1), then 2 by 4 (resulting in 0), and finally 20 by 4 (resulting in 5), resulting in the correct answer of 105.

Why is it necessary to write '0' when a smaller number is divided by the divisor?

When a number smaller than the divisor is reached, the speaker writes '0' in the answer to indicate that the division cannot be performed with that digit. This is a part of the correct division process.

What should you do if there is no remainder in the division process?

If there is no remainder after a division step, you can move on to the next number. For example, after dividing 14 by 7 in the 1449 ÷ 7 example, the remainder is zero, and the next number can be brought down.

How can we be sure that we have performed the division correctly?

You can be sure by checking the result through multiplication. If multiplying the answer by the divisor returns the original number, the division is correct.