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Geometry
ABCD is a square. EC=24cm, AF=30cm. What is the perimeter of the largest rectangle?
I don't get this one. A square has 4 equal sides, so A, B, C, and D would be equal.
But they're asking questions about E and F. where are they? And a reference to the largest rectangle--we're only talking about one rectangle, the square.
It seems like part of this question is missing.
I don't get this one. A square has 4 equal sides, so A, B, C, and D would be equal.
But they're asking questions about E and F. where are they? And a reference to the largest rectangle--we're only talking about one rectangle, the square.
It seems like part of this question is missing.
I don't get this one. A square has 4 equal sides, so A, B, C, and D would be equal.
But they're asking questions about E and F. where are they? And a reference to the largest rectangle--we're only talking about one rectangle, the square.
It seems like part of this question is missing.
Or maybe squares in China have six sides.
If you are still unable to figure out this 3rd grade problem after checking the attachment, you will be promptly moved back to 2nd grade.
1. In a subtraction operation, the sum of the minuend, the subtrahend, and the difference is 100, and the subtrahend is 4 times that of the difference. What are the three numbers, receptively?
2. In a subtraction operation, the sum of the minuend, the subtrahend, and the difference is 72, and the difference is 3 times that of the subtrahend. What are the three numbers, receptively?
3. There are 3 boxes. If we weigh two of them each time, we get 52kg, 50kg, and 48kg. What is the weight of the heaviest box?
4. Mom bought three kinds of fruits. Apples and oranges count 25 items in total, apples and peaches 27 in total, peaches and oranges 22 in total. How many items of fruits did mom buy in total?
Geometry
ABCD is a square. EC=24cm, AF=30cm. What is the perimeter of the largest rectangle?
solid questions. on par with a gifted program in math.
These are not that difficult. A third grader could do these if they have been in a strong math program. Americans are notoriously afraid of math and our math programs in schools are not aggressive at all. Most Americans complain about having to learn any math beyond basic addition and subtraction.
Algebra has never been a 3rd-grade subject. 3rd graders were memorizing times tables, when I was in school. Division was done in 4th grade. We began algebra-like work in 5th grade--preparation for algebra, I guess, but I noticed that other schools used our 5th grade math book in middle school.
I hear, that nowadays, schools don't require kids to memorize the times tables.
Last edited by Ruth4Truth; 07-03-2019 at 09:14 PM..
I hear, that nowadays, schools don't require kids to memorize the times tables.
That's nothing new. I graduated high school almost 20 years ago and none of us kids, even longer ago, were required by the school to memorise them. We had to learn how to do multiplication (I suck/ed) but that was it. Early 1990s public education dogma, what can I say.
Now, this business of kids no longer being required to learn cursive writing....
These are not that difficult. A third grader could do these if they have been in a strong math program. Americans are notoriously afraid of math and our math programs in schools are not aggressive at all. Most Americans complain about having to learn any math beyond basic addition and subtraction.
This is a stereotype. America is a big melting pot of people from many different cultures, different ethnicities and different national origins. There is no one "typical American".
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