Question

1 kilogram is equivalent to 1,000 grams. How many grams are in 3.5 kilograms? Circle the letter of the correct answer.

A. 0.35 gram
B. 3.5 grams
C. 3,500 grams
D. 35,000 grams

Rodney chose D as the correct answer. How did he get that answer? Write your statement down below.

Answer 1

The correct answer is C. 3500g

Explanation:

3.5kg×1000=3500g

Rodney got answe D. by moving the decimal place of 3.5kg over by 4 places instead of 3.

His equation could have been 3.5kg×10000= 35000

Rodney did NOT choose the correct answer

Answer 2

Answer: C. 3,500 grams

Explanation:

Rodney got D as the answer by because he thought there are three zeros and adding 3 and 5 to the 1,000 35,000.

Because we know the unit rate: 1(kilogram) = 1,000(grams)

Rodney chose the incorrect answer.

Therefore, 3.5 x 1000 = 3,500 is correct