Subtraction and Conversion of Weights

The video tutorial covers problems related to measurements in ounces and pounds. It explains the conversion between these units using conversion factors, specifically focusing on the fact that 16 ounces equal one pound. The tutorial demonstrates how to convert pounds to ounces and solve subtraction problems involving borrowing between these units.

What is the key fact you need to know when dealing with measurements in ounces and pounds?

• There are 14 ounces in a pound.

• There are 16 ounces in a pound.

• There are 10 ounces in a pound.

• There are 12 ounces in a pound.

How can the conversion factor between pounds and ounces be expressed?

• As a simple addition.

• As a multiplication table.

• As a subtraction problem.

• As a ratio or conversion factor.

When converting 4 pounds to ounces, what is the correct calculation?

• 4 * 14 = 56 ounces

• 4 * 12 = 48 ounces

• 4 * 10 = 40 ounces

• 4 * 16 = 64 ounces

Why is it important to have pounds on the bottom in the unit multiplier when converting pounds to ounces?

• To keep the units consistent.

• To avoid any conversion errors.

• To make the calculation easier.

• To ensure the units cancel out correctly.

What happens to the units when you multiply by a conversion factor?

• They cancel out.

• They are added together.

• They are subtracted.

• They remain unchanged.

In a subtraction problem involving pounds and ounces, what should you do if the ounces in the minuend are less than the subtrahend?

• Convert ounces to pounds.

• Add more ounces to the minuend.

• Borrow from the pounds in the minuend.

• Subtract directly without borrowing.

What is the first step in solving a subtraction problem with 216 pounds 3 ounces minus 173 pounds 14 ounces?

• Start with the ounces and borrow if necessary.

• Convert all units to ounces.

• Add the ounces together.

• Subtract the pounds first.

After borrowing in the subtraction problem, what is the new amount of ounces in the minuend?

• 14 ounces

• 19 ounces

• 16 ounces

• 3 ounces

What is the final result of the subtraction problem 216 pounds 3 ounces minus 173 pounds 14 ounces?

• 42 pounds 5 ounces

• 43 pounds 4 ounces

• 41 pounds 5 ounces

• 42 pounds 4 ounces

In the subtraction problem, what is the result of 19 ounces minus 14 ounces?

• 3 ounces

• 4 ounces

• 6 ounces

• 5 ounces