Math 10-3

Unit 4 Mass, Temperature, and Volume

Lesson number 42 Mass in the Imperial System

Formula page

I expect that you will be able to use a formula page for this class,  but that will be determined by your teacher.

Your teacher may have a formula page they expect you to use.

Below is a link to the formula page I will use (at least for now!) when I’m doing questions for this class.

This may change, depending on feedback from your teacher.

I encourage you to download this page and print it so you have it handy when you are doing math.

LINK
https://drive.google.com/open?id=1EMauePx-P6WrtTIcd7-AtNnmJt8zqXpI

Explore the Math Pages 146 - 147

Read/Work through this section of your textbook.
These ideas will be developed in the examples

Your teacher will let you know which pages you need to do for this lesson.

Example 1  Pages 149 - 150

Read the example problem and try to answer the question YOURSELF if you can.
Use the textbook solution or the Video Tutorial if you need help.

Video Tutorial

Example 2  Pages 150 - 151

Read the example problem and try to answer the question YOURSELF if you can.
Use the textbook solution or the Video Tutorial if you need help.

Video Tutorial

Mental Math and Estimation   Page 151

Do your best to use mathematics in your head to solve this problem.
Use the Video Tutorial to check your answer or get help with the problem.

Video Tutorial

Build Your Skills Pages 151 - 153

These questions all come from your textbook.

If you need extra practice or want to maintain your skills,  see the NEXT section for more practice questions.

Doing Practice Problems

The problems in this section reinforce the math presented in this lesson, and give you opportunities to build on and practice your skills.

•	Work through the practice problems for this lesson.
	These problems are for practice, you don’t need to hand them in!
	(your teacher may assign specific questions for you to complete)

•	Use the answers in the back of the book to CHECK YOUR WORK!

•	If you make a mistake, TRY TO FIX IT!

•	If you need help or want more information, view the video solutions provided.

•	If you still need more help,  CONTACT YOUR TEACHER!

•	EXTEND YOUR THINKING problems will be more challenging than the others.

Notes

Question 6,    I didn’t do a video for this one.
A good question, but more of a discussion question.
Researching “fair trade”  would be a good start for answering this kind of question.

Question 7,    to do this problem, you need the information about computer paper,  from earlier in this lesson.
computer paper—compacted and baled   1 cubic yard  weighs 1310 pounds

Video Solution Links

Check your work for every problem you do!
If you make a mistake,  try to fix it!
Use the video solutions for more information.
If a problem still doesn’t make sense, ASK YOUR TEACHER FOR HELP!

({{"Question 1", "Question 2", "Question 3", "Question 4", "Question 5"}, { , "Question 7", , , }})

Develop and Maintain Your Skills

Doing these problems

These questions are provided to help you develop and maintain your skills with the ideas of this lesson.

These questions are modelled after the questions in the textbook,  so there is nothing different here, just more questions if you need them.

These questions are completely optional (unless your teacher specifically assigns them)

Each question has an answer AND a video solution.

DO your best to answer the question YOURSELF first!

Check your work with the answer provided.

If you make a mistake,  try to fix it!

Use the video solutions for more information.

If a problem still doesn't make sense, ASK YOUR TEACHER FOR HELP!

Practice Problems

Problem

Manuela needs 1 pound 2 ounces of Gruyère cheese, 12 ounces of cheddar cheese, and 11 ounces of Swiss cheese for a fondue recipe.

How many pounds of cheese does she need in all?

Answer

2 pounds 9 ounces of cheese

Video Solution Link

Problem

Rochelle gave birth to twin boys weighing 6 lb 5 oz and 5 lb 14 oz.

What was their total weight?

Answer

12 lb 3 oz

Video Solution Link

Problem

If a basket of raspberries weighs 12 ounces and you need 4 pounds to make jam, how many baskets do you need to buy?

Answer

6 baskets (rounding up to be sure we have the 4 pounds, which means extra raspberries)

Video Solution Link

Problem

The cab of Arthur’s semi-trailer truck weighs 8.7 tons and the trailer weighs 6.4 tons.

If the loaded gross weight of the truck is 21.3 tons, what is the weight of the load:

a) in tons?

b) in pounds?

Answer

a)	The weight of the load is 6.2 tons.
b)	The weight of the load is 12 400 pounds.

Video Solution Link

Problem

An elevator has a maximum load restriction of 1.5 tons.

Is it safe for two tile layers weighing 195 lb and 210 lb to load it with 65 boxes of tile weighing 42 lb each?

(if it’s not safe, by how much do they exceed the load restriction?)

Answer

No , it is not safe.   They exceed the load restriction by 135 pounds.

Video Solution Link

Problem

A small truck weighs approximately 1300 lb.

It is loaded with cement slabs that weigh 150 lb each.

If the maximum loaded weight of the truck is 2.75 tons, how many slabs can be loaded?

Answer

28 slabs can be loaded onto the truck.

Video Solution Link

Problem

Kurt is planting wheat at the rate of 90 pounds per acre.

If he plans to plant 320 acres of wheat, how many tons of wheat will he use?

Answer

14.4 tons

Video Solution Link

Problem

A 12-ounce can of vegetables costs $1.49.

A 1 lb 2-oz can of the same vegetables costs $2.19.

Which is the better buy?  (support your answer with calculations)

Answer

The 1 lb 2-oz can is the better buy.
(12.17 ¢/oz   compared to 12.42 ¢/oz)

Video Solution Link