How to Multiply By Nine
Learn an easy trick to help you multiply by 9 in this short video. A student shows us a "handy" way to solve multiplication by counting fingers. She completes two examples to show the viewers her strategy.
3 Views 1 Download
- Activities & Projects
- Graphics & Images
- Handouts & References
- Lab Resources
- Learning Games
- Lesson Plans
- Primary Sources
- Printables & Templates
- Professional Documents
- Study Guides
- Graphic Organizers
- Writing Prompts
- Constructed Response Items
- AP Test Preps
- Lesson Planet Articles
- Interactive Whiteboards
- All Resource Types
- Show All
See similar resources:
Writing a Number in Expanded Form
Understanding place value is a basic mathematics skill. This Khan Academy video shows students how to write the number 14,897 in the expanded form. He explains that the 7 in the ones place is the same as 7x1, the 9 in the tens place is...
5 mins 3rd - 5th Math CCSS: Adaptable
Changing an Improper Fraction to a Mixed Number
This video on changing improper fractions to mixed numbers would nicely compliment the Khan Academy video on writing mixed numbers as improper fractions. Sal first shows students how to convert improper fractions. Then, he uses drawings...
4 mins 5th - 7th Math
Multiplying Whole Numbers and Applications 2
If your students are learning how to multiply double-digit numbers, then this Khan Academy video could be a good way to introduce the topic. Students watch Sal multiply 2 double-digit numbers. He explains the full process and why a 0 is...
3 mins 4th - 5th Math
Extend a Fraction Using a Number Line
Add depth to your class' understanding of fractions with video seven of this nine-part series. Building on prior experience representing fractions on number lines, young mathematicians learn to identify and extend patterns involving the...
5 mins 3rd - 5th Math CCSS: Designed
Add Rational Numbers Using Algorithms and Number Lines
Remind number crunchers that integers and rational numbers are related by using the Venn diagram shown in this video. It applies what students have learned about integers to all rational numbers. Reviewing absolute value, it shows how to...
4 mins 6th - 8th Math CCSS: Designed
Locate Rational Numbers Using a Number Line
Organize fractions and decimals all on one number line. This last video of a seven-part series places different numbers onto horizontal and vertical number lines and shows their relationship to one another. Learners are expected to know...
4 mins 5th - 7th Math CCSS: Designed