Mastering Fraction Operations: Adding and Subtracting Rational Expressions

What does EdPuzzle provide feedback on?

• The number of times the video was paused

• The number of questions answered

• The amount of video watched and when

• The number of times the video was replayed

What is the result of 5 + (-7) using a number line?

• -2

• -12

• 2

• 12

How should you rewrite a problem with a double negative?

• As subtraction

• As addition

• As division

• As multiplication

What is the result of 5 - (-7)?

• -2

• 2

• -12

• 12

Why is addition and subtraction of fractions more challenging than multiplication and division?

• Because it requires cross-multiplication

• Because it requires reducing fractions

• Because it requires a common numerator

• Because it requires a common denominator

What is the common denominator for 3/4 and -7/8?

• 4

• 8

• 12

• 16

What is the first step in multiplying fractions?

• Find a common denominator

• Cross-multiply the fractions

• Reduce the fractions if possible

• Add the numerators

What is the result of multiplying 4/5 by -10/11 after reducing?

• -8/11

• 8/11

• -40/55

• 40/55

What does the 'keep' step in 'keep, change, flip' refer to?

• Keeping the second fraction the same

• Keeping the first fraction the same

• Keeping the division sign

• Keeping the numerator the same

What is the result of 1/2 divided by -1/3 using 'keep, change, flip'?

• 1/6

• -1/6

• 3/2

• -3/2