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5+5+5 کتنے ہوتے ہیں؟ جواب ’15‘ دینے پر استاد نے طالب علم کو فیل کردیا، انٹرنیٹ پر کہرام، اصل جواب کیا ہے؟

Here's a "repeated addition" Common Core problem that's taught in third grade in US schools:

Use the repeated-addition strategy to solve 5x3.

If you answer the question with 5+5+5=15, you would be wrong.

The correct answer is 3+3+3+3+3.

Mathematically, both are correct. But under Common Core, you're supposed to read 5x3 as "five groups of three." So "three groups of five" is wrong.



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