How to Convert Percents to Decimals

Math with Mr. J

This concise mathematics tutorial demonstrates the specific procedural skill of converting percentages into decimal numbers. The video breaks down the conversion process by explaining the mathematical relationship between the two forms: converting a decimal to a percent involves multiplying by 100, so the inverse process—converting a percent to a decimal—requires dividing by 100. This concept is visually represented by moving the decimal point two places to the left. The video walks through four distinct examples that cover common scenarios students will encounter: a standard two-digit percent (40%), another two-digit percent (73%), a decimal percent requiring a placeholder zero (9.5%), and a percent greater than 100 (130%). Each example is worked out on a digital chalkboard with clear, color-coded markings showing exactly how the decimal point moves. For educators, this video serves as an excellent direct instruction tool or review resource for 5th through 7th graders. It effectively addresses common stumbling blocks, such as where to place the decimal when it isn't explicitly visible in a whole number, how to handle placeholder zeros for single-digit percents, and understanding that percentages over 100 result in decimals greater than 1.0.