Dividing Decimals Using Models

The video tutorial covers dividing decimals by whole numbers using models, such as squares, lines, and dots. It includes examples like finding the side length of a square frame and using base 10 blocks for division. The tutorial also addresses error analysis and compares division results, concluding with the use of inverse operations to verify answers.

What is the main focus of this lesson?

• Adding decimals to whole numbers

• Dividing decimals by whole numbers using models

• Multiplying decimals by whole numbers

• Subtracting whole numbers from decimals

How can you use a model to divide a decimal by a whole number?

• By using circles and triangles

• By using only dots

• By using decimal models with squares, lines, and dots

• By using only lines

What is the perimeter of Angela's picture frame?

• Three meters

• Five meters

• Two and four tenths meters

• Four meters

Why do we need to regroup in the model used for division?

• Because we can share the two wholes among the four groups

• Because we have enough hundredths

• Because we cannot share the two wholes among the four groups

• Because we have enough tenths

What is the length of each side of Angela's frame?

• Six tenths of a meter

• Four tenths of a meter

• One meter

• Two meters

What do base 10 blocks represent in the division model?

• Dots represent ones

• Flats represent ones, lines represent tenths, and small cubes represent hundredths

• Lines represent hundredths

• Squares represent tenths

How long is each piece of ribbon when Kyle cuts it into three equal lengths?

• Two yards

• Three yards

• Four yards

• One and seven hundredths yards

What is the result of dividing one and six tenths by four?

• Eight tenths

• Ten tenths

• Six tenths

• Four tenths

What is the error in Ada's model for dividing four and five hundredths by three?

• She used the wrong number of groups

• She regrouped the leftover one as ten tenths instead of ten hundredths

• She regrouped the leftover one as ten hundredths instead of ten tenths

• She did not regroup at all

Who can ride farther in one minute, Sam or Amanda?

• Sam

• Amanda

• Both ride the same distance

• Neither rides any distance