Not sure I agree with this, can you provide citations?
Who was behind the Common Core math standards, and will they survive?
Who created Common Core math? Jason Zimba and the other writers knew the transition would be tough, but they never imagined political battles would threaten the very existence of their dream.
1) That study was well before Common Core was implementedThe Impact of Arithmetic Skills on Mastery of Quantitative Analysis
Over the past several years math education has moved from a period where all math calculations were done by hand to an era where most calculations are done using a calculator or computer. There are certainly benefits to this approach, but when one concomitantly recognizes the declining scores on...www.hindawi.com
2) Unless I missed something, it's saying kids who learn calculations better also learn abstract processes better. That seems to be the expected result.