Subtracting Mixed Numbers Concepts

Mr. J explains how to subtract mixed numbers by solving two example problems. The first problem involves finding a common denominator and subtracting without borrowing. The second problem requires borrowing to complete the subtraction. The video emphasizes rewriting problems vertically, finding common denominators, and simplifying results.

What is the first step in subtracting mixed numbers?

• Add the whole numbers first

• Find the least common multiple

• Rewrite the problem vertically

• Convert to improper fractions

In the problem 5 and 3/4 minus 2 and 1/2, what is the common denominator used?

• 2

• 3

• 4

• 6

After finding a common denominator, what is the next step in subtracting mixed numbers?

• Subtract the whole numbers

• Add the fractions

• Subtract the fractions

• Multiply the fractions

What is the result of 5 and 3/4 minus 2 and 1/2?

• 3 and 1/4

• 2 and 1/4

• 3 and 1/2

• 2 and 1/2

What is the common denominator for the fractions 1/3 and 5/6?

• 3

• 12

• 6

• 9

Why do we need to borrow in the problem 7 and 1/3 minus 3 and 5/6?

• To convert to improper fractions

• To subtract larger fractions

• To simplify the fractions

• To make the whole numbers equal

How is one whole represented when borrowing in the problem 7 and 1/3 minus 3 and 5/6?

• 9/9

• 3/3

• 12/12

• 6/6

What is the simplified result of 7 and 1/3 minus 3 and 5/6?

• 3 and 5/6

• 3 and 1/3

• 3 and 1/2

• 3 and 2/3

What should you always check after subtracting mixed numbers?

• If the fractions are improper

• If the denominators are the same

• If the fractions can be simplified

• If the whole numbers are equal

What is the final step in subtracting mixed numbers?

• Check for simplification

• Multiply the fractions

• Subtract the whole numbers

• Add the fractions