Decimal Division and Grouping Problems

This video tutorial covers lesson 5.5 on decimal division, focusing on using models to divide by decimals. It begins with an introduction to the concept and the essential question of how models can aid in division. The tutorial provides practical examples, such as dividing fabric and money, to illustrate the use of decimal models. Advanced problems are also tackled, demonstrating the application of these models in more complex scenarios. The lesson concludes with a summary and a preview of the next topic, which will focus on dividing decimals without models.

What is the essential question addressed in the lesson on decimal division?

• How to add decimals using models

• How to multiply decimals using models

• How to subtract decimals using models

• How to use a model to divide by a decimal

In Lisa's shopping bag problem, how many yards of fabric does she have?

• 2.7 yards

• 3.6 yards

• 4.5 yards

• 5.1 yards

How many shopping bags can Lisa make from 3.6 yards of fabric?

• 12 bags

• 15 bags

• 10 bags

• 8 bags

Why do we make each group equal to the divisor in decimal division?

• To ensure accuracy in multiplication

• To make the model look symmetrical

• To simplify the division process

• To find the number of groups of the divisor in the dividend

What does each strip in the model represent if it is considered as one whole?

• A thousandth of the whole

• A hundredth of the whole

• A tenth of the whole

• One whole

How many groups of 9/10 can be made from 2.7 yards of fabric?

• 2 groups

• 3 groups

• 5 groups

• 4 groups

How many stacks of 25 cents can Julie make from $1.75?

• 5 stacks

• 6 stacks

• 7 stacks

• 8 stacks

What is the result of dividing 1.75 by 0.25?

• 7

• 8

• 6

• 5

How many groups of 3/10 are in 1.2?

• 4 groups

• 3 groups

• 5 groups

• 6 groups

How many groups of 9/100 are in 45/100?

• 3 groups

• 4 groups

• 5 groups

• 6 groups