Percent:  90 is 80% of what number?
Channel: Paddy MATH
Date: 2021-03-14

See my free math courses:
Arithmetic - 4th, 5th, 6th grade math:  https://ghc.instructure.com/courses/2153275/modules
Pre-Algebra - 6th, 7th grade math:  https://ghc.instructure.com/courses/2153793/modules
Algebra 1 / Elementary Algebra:  https://ghc.instructure.com/courses/2153794/modules
Algebra 2 / Intermediate Algebra:  https://ghc.instructure.com/courses/1943805/modules
Math in Society, Math&107:  https://ghc.instructure.com/courses/2134992/modules
These are all from Grays Harbor College, WA, USA. (community college)

See my free math reviews here: https://www.ghc.edu/instruction/learning-center/math-brush-ups  ("Math Brush Ups" at Grays Harbor College, Aberdeen, WA, USA)