SJ 7.7 lesson

SJ 7.7 lesson

Common fractions: Reinforcing subtraction strategies (related and unrelated denominators)

Question

If you had the fractions 1/2 and 4/5, how many points would you get?

Answer

2 points because the denominators aren't related.

Directions - math notebook

Solve 4/5 - 1/2 = ? in your math notebook.

Be prepared to share your answer.

Answer

3/10

Question

If we had the fractions 1/6 and 1/3, how many points would we get?

Answer

We would get 1 point because 6 is the least common multiple, so we would only have to change 1/3.

Directions - math notebook

Solve 1/3 - 1/6 = ? in your math notebook.

Be prepared to share your answer.

Answer

1/6

Question

If we had the fractions 3/4 and 1/5, how many points would we get?

Answer

We would get 2 points because we need to change both denominators.

Directions - math notebook

Solve 3/4 - 1/5 = ? in your math notebook.

Be prepared to share your answer.

Answer

11/20