If t > 0 and t2 − 4 = 0, what is the value of t ?
The majority probably got that one but I wouldn’t bet much on it. Those using advanced mathematical operations are a horse of a different color. You think they could calculate a square root of a number greater than 4?
What schools achieve levels of math achievement that you believe to be true?
I would not allow my sons to use calculators even though they could at school. A micro-revolt.