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5.5: Weight Problems

Difficulty Level: At Grade Created by: CK-12
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Look at the picture below. Can you figure out the weight of the green block? What about the yellow block? In this section, we will learn how to find the weights of individual blocks given information about the weights of multiples or combinations of blocks.

Weight Problems 

In order to solve the problem above, use the problem solving steps.

  • Start by describing what information is given.
  • Then, identify what your job is. In these problems, your job will be to figure out the weight of each individual block.
  • Next, make a plan for how you will solve. In these problems, find the weight of the block using the scale that shows only one type of block first.
  • Then, solve the problem.
  • Finally, check your solution. Make sure that your solution causes each scale to have the correct weight.

1. Figure out the weight of each block.

We can use the problem solving steps to help us.

2. Figure out the weight of each block.

We can use the problem solving steps to help us.

3. Figure out the weight of each block.

We can use the problem solving steps to help us.

Earlier  Problem Revisited

We can use the problem solving steps to help us.

Vocabulary

In math, an unknown is a letter that stands for a number that we do not yet know the value of. In this concept, when you figured out the value of the individual blocks you were solving for unknowns.

Examples 

For each problem, figure out the weight of each block.

Example 1

The green block is 3 pounds and the blue block is 4 pounds.

Example 2

The red block is 7 pounds and the yellow block is 8 pounds. 

Example 3

The blue block is 10 pounds and the yellow block is 3 pounds. 

Review 

For each problem, figure out the weight of each block.

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Difficulty Level:
At Grade
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Date Created:
Jan 18, 2013
Last Modified:
Mar 23, 2016

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