Mixed Number Subtraction Concepts

The video tutorial explains how to subtract mixed numbers by aligning them vertically and finding a common denominator. It provides two examples: one without borrowing and another with borrowing, detailing the steps involved in each process. The tutorial emphasizes understanding the borrowing concept and offers an alternative method of converting mixed numbers to improper fractions.

Why is it helpful to line up mixed number subtraction problems vertically?

• It makes the numbers look bigger.

• It helps in organizing the subtraction process.

• It is a requirement in mathematics.

• It makes the problem more complex.

What is the least common denominator of 3 and 15?

• 3

• 15

• 30

• 45

How do you rewrite 1/3 with a denominator of 15?

• Multiply both numerator and denominator by 3.

• Multiply both numerator and denominator by 5.

• Add 5 to the numerator.

• Subtract 2 from the denominator.

What is the result of subtracting 5/15 from 2/15?

• 7/15

• 1/15

• 3/15

• 5/15

What is the simplified form of 4 and 3/15?

• 4 and 3/5

• 4 and 1/15

• 4 and 2/5

• 4 and 1/5

What is the least common denominator of 6 and 8?

• 36

• 48

• 12

• 24

How do you rewrite 12 and 20/24 when borrowing?

• 11 and 20/24

• 11 and 44/24

• 12 and 44/24

• 12 and 20/24

What is the result of subtracting 21/24 from 44/24?

• 19/24

• 21/24

• 23/24

• 25/24

What is the final result of subtracting 3 and 7/8 from 12 and 5/6?

• 8 and 21/24

• 9 and 23/24

• 9 and 21/24

• 8 and 23/24

What alternative method is suggested to avoid borrowing?

• Adding instead of subtracting

• Using a calculator

• Converting mixed numbers to improper fractions

• Using decimals