Understanding Length Units and Conversions

The video tutorial introduces the concept of length units and their conversions for grade 3 mathematics. It begins with a discussion on using rulers and meters for measuring length, followed by an explanation of converting between different units such as kilometers, meters, and centimeters. The tutorial introduces the conversion ladder method, emphasizing multiplication and division by 10 for moving up or down the ladder. Quick conversion methods using boxes are also demonstrated. The lesson concludes with practice problems to reinforce the concepts learned.

What is the main topic of today's lesson?

• Units of length

• Units of weight

• Units of time

• Units of volume

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CCSS.2.MD.A.2

How many centimeters are there in one meter?

• 200 cm

• 10 cm

• 50 cm

• 100 cm

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Which of the following is a unit of length?

• Kilogram

• Second

• Liter

• Meter

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CCSS.4.MD.A.1

What happens when you move down one step on the conversion ladder?

• Multiply by 5

• Divide by 10

• Multiply by 10

• Divide by 5

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CCSS.4.MD.A.1

If you have 3 kilometers, how many meters is that?

• 300 meters

• 30000 meters

• 30 meters

• 3000 meters

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CCSS.4.MD.A.1

How many meters are equivalent to 5000 millimeters?

• 0.5 meters

• 5 meters

• 500 meters

• 50 meters

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What is the box method used for?

• Estimating time

• Measuring weight

• Converting units of length

• Calculating area

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CCSS.4.MD.A.1

Using the box method, how many meters are in 7 kilometers?

• 70000 meters

• 70 meters

• 7000 meters

• 700 meters

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CCSS.4.MD.A.1

What is the result of converting 15 dekameters to centimeters using the box method?

• 150000 cm

• 15000 cm

• 1500 cm

• 150 cm

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CCSS.4.MD.A.1

How many kilometers are 6000 meters when converted using the box method?

• 0.6 km

• 6 km

• 600 km

• 60 km

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