Online Practice Sites
https://www.mathcounts.org/resources/past-competitions
https://mathkangaroo.org/mks/practice/free-question-samples/
https://moems.org/sample/
https://www.teachengineering.org/content/ucd_/curricular_units/ucd_fieldday/ucd_fieldday_unit_5thgrade_mathtest_v2_tedl.pdf