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Playlist CAHSEE Math Test Prep: Mathematical Reasoning 30 videos
CAHSEE Mathematical Reasoning: Drill 1, Problem 1. Based on this information, which of the following can be determined?
CAHSEE Math Mathematical Reasoning: Drill Set 1, Problem 2. Which of the following should be the most appropriate first step in solving the equation?
CAHSEE Math Mathematical Reasoning: Drill 1 Problem 3. Which of the following is the correct order of steps?
CAHSEE Math 6.2 Mathematical Reasoning 188 Views
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Description:
Mathematical Reasoning Drill 6, Problem 2. The arithmetic operation used to find the distance that Iron Man traveled during this time can also be used to solve which of the following problems?
Transcript
- 00:03
When I shmoop, you shmoop, we shmoop…
- 00:07
Iron Man experienced a glitch with his new suit, and it took him a while to find the “stop” button.
- 00:13
In the meantime, he flew for 2.5 hours at an average speed of 325 mph.
- 00:22
The arithmetic operation used to find the distance that Iron Man traveled during this
- 00:26
time can also be used to solve which of the following problems?
Full Transcript
- 00:30
And here are the potential answers...
- 00:35
So… This question is really about leverage –
- 00:37
it’s taking a constant and multiplying it by a rate.
- 00:40
If we were to solve the problem at hand, where Iron Man traveled 325 miles in ONE hour…
- 00:45
…we’d multiply that number by 2.5 to find out how far he traveled in 2.5 hours.
- 00:50
So… which one of our choices does the same thing?
- 00:53
To solve A, we’d use real basic addition… so that answer is clearly a decoy.
- 00:58
To solve B, it’s basic subtraction. Also not going to cut the mustard.
- 01:03
What about C? A nickel for each student… five cents times 25…
- 01:08
so we’re looking at multiplication here. Just as we hoped.
- 01:11
We’re guessing choice D will be a dud… and sure enough, we’d need to use division to solve it.
- 01:17
So… C it is.
- 01:18
As in… “Check the User’s Manual.”
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