SCT Test 2 Video Notes

Question 1

What’s the advantage to using scientific notation when working with millions, billions, and trillions?

Answer 1

You don’t have to write out all the zeros, which saves you a lot of time on an actual test.

Question 1

If you paid $8.73 for a T-shirt that was 20%, what is the equation for the regular price of the T shirt?

Answer 1

80/100(p) = 8.73

Question 2

question 3 two methods explain

Question 3

What is reflective symmetry?

Answer 3

When you draw a line through a shape and when both sides of the shape are folded along the line, they fall on each other perfectly (ex. a square, line of symmetry exactly in the middle)

Question 4

What is rotational symmetry?

Answer 4

When you place a point in a shape and if you rotate the shape around that center by 90° and 180°, you have the exact same shape.

Question 5

How to solve a question with a basic pattern and asks for a large transition (ex. pattern of black squares surrounded by white squares, 1 black square, 2 black squares, 3 black squares, and the question asks for 157 black squares)

Answer 5

Notice similarities in each of the patterns that don’t change no matter what, and apply that to the question. Try to create and equation and solve.

Question 6

How do you apply ratios to a slope?

Answer 6

convert the ratio to fraction and then treat it as a slope

Question 7

How do you convert minutes into seconds?

Answer 7

multiply the number of minutes by 60

Question 8

How do you convert meters into kilometers?

Answer 8

divide the number of meters by 1,000

Question 9

What’s the first thing you should do after reading and speed x time x distance problem?

Answer 9

DRAW A PICTURE!!!!!!!!!!!!!!!

Question 10

What is a direct proportionality?

Answer 10

If x increases, y increases - y1/x1 = y2/x2

Question 11

When asked in a question which point to perform a rotation about, what should you do?

Answer 11

draw a picture simulating the rotation about each point and compare to the final image

Question 12

How do you find an irrelevant research question?

Answer 12

use keywords and see if they match the question and use critical thinking to try and relate the question to the research; if checks out, then it is a relevant question

Question 13

When asked for a response to a question based on data, what should you do? (ex. I just heard in the news 18% of people have the flu. Do I really have the flu?)

Answer 13

Find the answer that relates the data provided in the question (ex. you have an 18% chance of having the flu)

Question 14

Will a calculator be provided on the STEM Critical Thinking test?

Answer 14

No, a calculator will not be provided.

Question 15

When asked what type of object a pattern approaches, what do you do?

Answer 15

Look at all the given objects in the pattern and she how it morphs over time, and compare these observations to the answer choices.

Question 16

How do you calculate net percentage change? (ex. a stock increased 10% in value the first year and decreased 20% in value the second year)

Answer 16

equation would be: x(1.1) because it starts at 100% and increases 10%, and loses 20% which leaves 80% remaining. 1.1 * 0.8 = 0.88, which is 88%. 100% - 88% = 12%, which means the stock decreased by 12%.