At a wellness checkup in June, a 2-year-old child weighed 22 lb, 4 oz. By September, the child had gained 1 lb, 12 oz, and by December the child had gained another 1 lb, 8 oz. How much did the child weigh at the December checkup?

Question

Quizplus · Accepted Answer

Add the whole numbers first: 22 lb + 1 lb + 1 lb = 24 lb
 
 Next, add the ounces: 4 oz + 12 oz + 8 oz = 24 oz
 
 Convert 24 oz to pounds:
 
 1 lb = 16 oz
 
 1 lb : 16 oz = x : 24 oz
 
 16x = 1 * 24
 
 16x * 16 = 24 * 16
 
 x = 1.5 lb
 
 Add the two numbers: 24 lb + 1.5 lb = 25.5 lb
 
 Convert 0.5 lb to ounces:
 
 1 lb : 16 oz = 0.5 lb : x
 
 x = 16 * 0.5
 
 x = 8
 
 The child weighs 25 lb, 8 oz.

At a Wellness Checkup in June, a 2-Year-Old Child Weighed