WBSED - 7 - Maths :: Approximation

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[Contributor - Kripa S]

Objective: To explain approximation and rounding off

Subtopics to be covered:

- Rounding off to nearest 10, 100, 1000 based on the digit ( >= 5 or < 5)

- Rounding off in decimals in place value of 1/10, 1/100, 1/1000 based on digit

- Finding the approximate value of a rational number based on no. of digits asked

Learning Outcome:

- Students can write approximate value of number given based on place value limit

[Contributor - Rini Jose]

Hindi Medium

[Contributor - Kripa S]

https://www.youtube.com/watch?v=TRocn_jSDO4 (standard form of numbers)

https://www.youtube.com/watch?v=ArSJu4S0zBg&index=4&list=PL12B8B0749D02CDB9 (rounding whole numbers)

[Contributor - Kripa S]

http://cdn.multiplication.com/sites/default/files/images/2014-03-10%2014_36_01.jpg (estimation)

http://slideplayer.com/38/10804509/big_thumb.jpg (rounding off units place)

http://www.kbcabinetmaking.com.au/unit3_making_measurements/section1_calculating/images/lesson1_using_a_calculator_6.jpg (rounding off decimals)

https://www.theschoolrun.com/sites/theschoolrun.com/files/content-images/rounding_hundreds.png (example to round off in 100s place)

[Contributor - Kripa S]

1. Count the number of students in your class. Count the number of students in your school. Can you tell the number of children in your village - exact or aproximately?

2. Share how many people live in your village. Discuss with your friends on the count. Whose count is more correct? Learn about approximation in this activity

3. Can you tell number of stars present in sky at night. An approximate number?

[Contributor - Arnab Das]

https://drive.google.com/open?id=0BzNF2YyqQxJ-d1FNb0EwNWVSbGs

[Contributor - Arnab Das]

Term	Transliterated Term	Translated Term
Approximate Value	এপ্রক্সিমেট ভ্যালু	আসন্নমান
Actual Value	একচুয়াল ভ্যালু	প্রকৃত মান
Decimal Place	ডেসিমাল প্লেস	দশমিক স্থান
Tens Place	টেনস প্লেস	দশক স্থান
Hundreds Place	হান্ড্রেডস প্লেস	শতক স্থান
Thousands Place	থাউসান্ডস প্লেস	হাজার স্থান

[Contributor - Arnab Das]

https://drive.google.com/open?id=0BzNF2YyqQxJ-V0RrVkg0ekhUc2s

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