Kungfu math p4 slide15 (division decimal)pdf
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This document provides an overview and example of dividing decimals. It discusses dividing decimals up to two decimal places by a one-digit whole number. An example problem is shown where the length of Ribbon A is 10.08m and is 3 times as long as Ribbon B. Through long division, the length of Ribbon B is calculated to be 3.36m. Steps are demonstrated to set up and perform long division with decimals, keeping the decimal points aligned.
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Conversion of unit of Measurements for Length
1) Identify the unit you are starting with.
2) Identify the unit you want to end with.
3) Find the conversion factor/s that will convert the starting unit to ending unit. Using the fractional form the unit you want to end will be the numerator the unit to be cancelled will be the denominator.
4) Set up the Mathematical expression so that all units except the unit you want to end with, will not be cancelled.
Convert 36 inches to feet.
Solution:
Step 1: inches
Step 2 : feet
Step 3 : (1 𝑓𝑜𝑜𝑡)/(12 𝑖𝑛𝑐ℎ𝑒𝑠)
Step 4: 36 inches x (1 𝑓𝑜𝑜𝑡)/(12 𝑖𝑛𝑐ℎ𝑒𝑠) = 3 feet
Step 5: Therefore, 36 in = 3 feet
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Conversion of unit of Measurements for Length
1) Identify the unit you are starting with.
2) Identify the unit you want to end with.
3) Find the conversion factor/s that will convert the starting unit to ending unit. Using the fractional form the unit you want to end will be the numerator the unit to be cancelled will be the denominator.
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Convert 36 inches to feet.
Solution:
Step 1: inches
Step 2 : feet
Step 3 : (1 𝑓𝑜𝑜𝑡)/(12 𝑖𝑛𝑐ℎ𝑒𝑠)
Step 4: 36 inches x (1 𝑓𝑜𝑜𝑡)/(12 𝑖𝑛𝑐ℎ𝑒𝑠) = 3 feet
Step 5: Therefore, 36 in = 3 feet
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Lesson plans and teaching
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This document provides a lesson plan for teaching students about measuring weight in metric units. The lesson has students:
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Kungfu math p4 slide15 (division decimal)pdf
- 1. Decimals Division What will we learn today? • division of decimals (up to 2 decimal places) by a 1-digit whole number
- 2. In the previous lectures, we have learnt about addition and subtraction in decimals. Let’s recap!
- 3. Applying what we have learnt
- 4. Try this out! Mr Li used 2.5kg of rice on Monday and 1.75 kg on Tuesday. He used a total of 9 kg Monday and Wednesday. How much rice did he use on Wednesday?
- 5. Solution Mr Li used 2.5kg of rice on Monday and 1.75 kg more on Tuesday. He used a total of 9 kg from Monday to Wednesday. How much rice did he use on Wednesday? Step 1: 2.5kg + 1.75kg =___kg
- 6. Solution Mr Li used 2.5kg of rice on Monday and 1.75 kg more on Tuesday. He used a total of 9 kg from Monday to Wednesday. How much rice did he use on Wednesday? 2.50 + 1.75 Step 1: 2.5kg + 1.75kg = 4.25kg He used 4.25kg of rice on Tuesday.
- 7. Solution Mr Li used 2.5kg of rice on Monday and 1.75 kg more on Tuesday. He used a total of 9 kg from Monday to Wednesday. How much rice did he use on Wednesday? 2.50 + 4.25 Step 2: 2.5kg + 4.25kg = 6.75kg He used 6.75kg of rice on Monday and Tuesday.
- 8. Solution Mr Li used 2.5kg of rice on Monday and 1.75 kg more on Tuesday. He used a total of 9 kg from Monday to Wednesday. How much rice did he use on Wednesday? 9.00 - 6.75 Step 3: 9.00 kg - 6.75kg = 2.25 kg He used 2.25kg of rice on Wednesday.
- 10. Try this out! 1. The length of ribbon A is 10.08 m. It is 3 times as long as ribbon B. Find the length of ribbon B.
- 11. Try this out! 1. The length of ribbon A is 10.08 m. It is 3 times as long as ribbon B. Find the length of ribbon B. Let’s draw models to help us visualize the scenario.
- 12. Try this out! 1. The length of ribbon A is 10.08 m. It is 3 times as long as ribbon B. Find the length of ribbon B. 10.08m A
- 13. Try this out! 1. The length of ribbon A is 10.08 m. It is 3 times as long as ribbon B. Find the length of ribbon B. 10.08m A B
- 14. Try this out! 1. The length of ribbon A is 10.08 m. It is 3 times as long as ribbon B. Find the length of ribbon B. 10.08m A B ?
- 15. Solution 1. The length of ribbon A is 10.08 m. It is 3 times as long as ribbon B. Find the length of ribbon B. 10.08m 10.08 ÷ 3 = ___ A B ?
- 16. Long Division
- 17. Long Division
- 18. Long Division 1. Do the long division as per normal. 2. Make sure the decimal points are in line.
- 19. Long Division
- 20. Solution 1. The length of ribbon A is 10.08 m. It is 3 times as long as ribbon B. Find the length of ribbon B. 10.08m 10.08 ÷ 3 = 3.36 A B 3.36m
- 21. Are you ready to try out the questions?