Cross-Reducing

Tanya's teacher emphasizes writing answers in simplest form. Tanya multiplies fractions 2/3 and 9/10, initially getting 18/30, which she simplifies to 3/5. Her sister introduces cross-reducing, a method to simplify fractions before multiplying. By cross-reducing, Tanya learns to simplify 2/3 and 9/10 directly to 1/1 and 3/5, resulting in a final answer of 3/5. The lesson covers cross-reducing and its application in fraction multiplication.

What was Tanya's initial result when she multiplied 2/3 and 9/10?

• 18/30

• 6/10

• 3/5

• 9/15

What method did Tanya's sister introduce to simplify fractions before multiplying?

• Cross-reducing

• Cross-multiplying

• Cross-adding

• Cross-subtracting

Which numbers did Tanya's sister circle to demonstrate cross-reducing?

• 2 and 9

• 2 and 10

• 3 and 10

• 3 and 9

What common factor is used to simplify the numbers 2 and 10 in cross-reducing?

• 2

• 10

• 5

• 3

After cross-reducing, what is the final simplified result of multiplying 2/3 and 9/10?

• 3/5

• 1/5

• 2/5

• 9/10