When dividing by a fraction, it is the same as multiplying by the inverse of the fraction.
20 divided by 1/7 = 20 * 7/1 = 140
Check with the other problems.
Explain how the answers for 20 divided by 1/7 (140), 20 divided by 2/7 (70) and 20 divided 6/7 (23 1/3) are related. Show why this makes sense.
3 answers
9.20
9.26