For each of the following choose the correct unit (milligrams,grams,or kilograms) to make each sentence reasonable: a. A dime has a mass of 2 _______. b. The recipe said to add 4 _______ of salt. c. One strand of hair has a mass of 2______. Can someone please help me with these 3 problems I have a hard time figuring them out! :(
My students used to understand these relationships
a quarter weighs about 5 grams
3 cans of beer weigh about 1 kg
I cannot detect 1 ml in my hand
What can you deduce from that?
a) grams
b) grams
c) milligrams
Of course! I can help you with these problems. To determine the correct unit (milligrams,grams,or kilograms), we need to understand the relative sizes of these units and apply them to the given context. Here's how you can approach each problem:
a. A dime has a mass of 2 _______.
To determine the correct unit for the mass of a dime, you need to consider the size and weight of a dime. Since a dime is relatively small and lightweight, it would be best to use grams as the unit. Therefore, the sentence would be reasonable if we say "A dime has a mass of 2 grams."
b. The recipe said to add 4 _______ of salt.
In cooking, we commonly measure ingredients in grams or kilograms. Milligrams are typically used for very small quantities. Considering that you wouldn't usually add a very small amount like milligrams of salt to a recipe, the most reasonable unit would be grams. Therefore, the sentence could be "The recipe said to add 4 grams of salt."
c. One strand of hair has a mass of 2 ________.
When measuring the weight of hair, we are dealing with very small quantities. Therefore, milligrams or grams would be more appropriate than kilograms. Since milligrams are the smaller unit, it would be most logical to use that unit. Hence, the sentence could be "One strand of hair has a mass of 2 milligrams."
By applying the relative sizes of milligrams, grams, and kilograms to the given context, we've determined the most reasonable unit for each sentence.