Let's solve some real-world problems using what you just learned about weight.
But first...
The weight of an object tells us how heavy it is.
Some common units of weight we use are ounces, pounds, tons, grams, and kilograms.
1 ounce is almost as light as a slice of bread.
1 pound is equal to 16 ounces.
Imagine two medium-sized oranges, that's about a pound.
For bigger things, we use ton.
1 ton is equal to 2,000 pounds.
Ounces, pounds, and tons are called customary units.
Grams and kilograms are called metric units.
1 gram is tiny. It's about two-fifths of the weight of a penny.
1 kilogram is equal to 1,000 grams.
We usually use pounds and kilograms when we measure food, animals, and people.
Now, let's solve some real world problems about weight. 😺
Baker Bill used 67 kilograms of flour on Monday. He used 48 kilograms of flour on Tuesday. How much did he use in all?
This is a word problem that has something to do with weight.
Let's look for important words and numbers, and circle them.
To understand what these clues mean, draw a model.
The question asks for the "total weight".
This means we need to add the two weights together.
Let's write an addition equation.
67 + 48 = 115
Finally, write your answer in a complete sentence.
The total weight of the flour that Baker Bill used on Monday and Tuesday is 115 kilograms.
The big cow weighs 985 pounds. The weight of the baby cow is 326 pounds less than the big cow. What is the weight of the baby cow?
First, look for clues.
Let's draw a model, so we know what to do.
We need to subtract!
Next, let's write an equation.
985 - 326 = 659
Finally, write a complete sentence to show our answer.
The weight of the baby cow is 659 pounds.
There are 12 marbles in a bag. Each marble weighs
5 grams. What is the total weight of the marbles in the bag?
First, look for clues.
We can draw a model to show the problem.
The problem is asking for the "total weight".
Remember, all the marbles have the same weight.
This means we can just multiply to get the total! 😃
Let's write an equation to show our solution.
12 x 5 = 60
Finally, write a complete sentence to explain your answer.
The total weight of the marbles in the bag is 60 grams.
A box of crayons weighs 64 grams. There are 8 crayons in a box. How much does each crayon weigh?
First, look for clues, and circle them.
Now, we can draw a model.
We have a total weigh and the number of parts.
We need to find the weight of each part.
How?
We divide!
Let's write an equation for the problem and solve it.
64 ÷ 8 = 8
Finally, we write a complete sentence for our answer.
Each crayon weighs 8 grams.
Now practice solving some weight word problems on your own. 😺