3 天之前 · Test your knowledge of the skills in this course. Start Course challenge

2 天之前 · Khan Academy ... Khan Academy

4 天之前 · This course contains Khan Academy practice problems crafted to support the Illustrative Math (IM) curriculum. Designed to make it easier for districts, teachers, and …

2 天之前 · Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of …

2025年5月9日 · Khan Academy offers free, world-class math education for anyone, anywhere.

4 天之前 · Division of fractions: 2nd quarter Decimal numbers up to ten thousandths: 2nd quarter Addition and subtraction of decimal numbers: 2nd quarter

2 天之前 · Get ready for 5th grade math! Learn the skills that will set you up for success in decimal place value; operations with decimals and fractions; powers of 10; volume; and properties of …

2 天之前 · Grammar is the collection of rules and conventions that makes languages go. This section is about Standard American English, but there's something here for everyone.

2025年6月20日 · Learn fifth grade math—arithmetic with fractions and decimals, volume problems, unit conversion, graphing points, and more. (aligned with Common Core standards)

4 天之前 · ELA practice and instruction for 5th grade, covering reading comprehension and vocabulary. Aligned to US Common Core State Standards for Reading: Literature; Reading: …