A human head weighs 160 ounces. What is
that weight in kilograms? Analyze the work
below.
what is the student's error?
1.000 g
o The student forgot to multiply by
1 kg
The student forgot to multiply by 1000
1 lb = 16 oz
1,000 g = 1 kg
1 kg = 2.2 lb
1 oz
Student's work:
160 oz 16 lbs
1 oz
1 kg
2.2 lbs
The student multiplied by 16 instead of
1 lb
16 oz
The student multiplied by 1ko instead of
2.2 16
1 kg
163.6
2.2 lb