Reply to age to learn from school for unknown number a & 2 digit/3 digit multiplication

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[quote=Anonymous][quote=Anonymous][quote=Anonymous]Math is my strength, and I aced all calculus & Statistics class. and I don't understand why my kid can't write out an equation out from word problem and to solve unknown a or b. For example, john has 5 apples more than Sam, and their sum is 13. I tell him to write out the equation below like that, and to deduct 5 on both side, add up a=a =2a, divide 2 on both side, to get the answer 4. So, John has 9 apple, and Sam has 4 apples. It is confusing to him if John has "FEWER" apple.

a +(a+5) =13

Division has been a challenge. He has memorized multiple tables long time ago, but he can't do 2 digit or 3 digit division.

Please let me know what age does school teach all these? [/quote]

In Virginia, the so-called "Standards of Learnings" (SOL) do not introduce variables until 5th grade.  (No joke.)[/quote]

Which is 4th grade for kids in advanced math in FCPS. Not sure how surrounding districts do it.

The Virginia standards for math need to get more rigorous in the elementary years for sure, though.[/quote]

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