Words and Numbers
Hillary pours 10 cups of orange juice into glasses that hold 1 2/3 cup each. How many glasses does Hillary fill?
6 cups
4 1/2 ÷ 1 1/2
3
6 ÷ 3/4
8
A rectangle has a length of 8 inches and a width of 3 inches.What is the perimeter of the rectangle?
Use the formula:
P=2l+2w
22 inches
Name 3 lab safety rules
examples
-no horseplay
- no eating or drinking
- always wear safety goggles
Chris and Jeff sold 15.5 pounds of trail mix. They sold the trail mix for $4 per pound. How much money did they collect?
$62
2 1/3 ÷ 1 1/3
1 3/4
2 ÷ 1/2
4
A= lw
length: 3/4
width: 1/2
2 1/2
SCIENCE SHOWCASE:
The _________________variable is the part of the experiment you change to test a prediction.
constant
dependent
independent
problem
3. Independent
A model train is 15 3/4 inches long. Each car in this train is 2 5/8 inches in length. How many cars are on the train?
6 cars
3 6/7 ÷ 6 3/4
4/7
4/5 ÷ 1/5
4
P = 2l + 2w
length = 9
Width = 5
28
In a scientific experiment and investigation, how many independent variables should a scientist have?
1
Gerardo has a gold chain that is 34 inches long. He cuts it into 2 18 -inch-long chains. How many gold chains does Gerardo have now?
16 chains
16÷ 2 2/3
6
1,062 ÷ 18
59
How wide is a rectangular strip of land with a length of 34 mile and an area of 12 square mile? Use the area formula A = lw.
16 miles
The _________________variable is the factor that you measure, observe, or test to see how it responds to a change?
dependent
constant
problem
Independent
1. Dependent
Aaron makes wooden picture frames. He cuts small round posts into 2/3 inch thick disks of wood. How many picture frames can Aaron make from a post that measures 1/2 foot in length.
6/1 ÷ 3/2 = 6/1×23= 9
9 picture frames
3 5/6 ÷ 9 5/6
23/59
5/6 ÷ 1/12
10
What is the length of a rectangle with an area of 8 3/4 square feet and a width of 2 1/2 feet? Write your answer as a mixed number in simplest form.
Use the formula A = lw
3 1/2 feet
The conditions that remain the same throughout an entire experiment to help ensure that a fair test between all groups and trials are run are known as the ____________.
Constants