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Multiplying and dividing with significant figures | Decimals | Pre-Algebra | Khan Academy
By Khan Academy
This video takes us through some real world examples of when we should use significant figures when multiplying and dividing. An important note: never consider significant figures until you have reached your FINAL ANSWER. Otherwise, rounding too early will produce more uncertainty about your solution.
Lattice Multiplication with Decimals
By YourMathGal
Shows an alternate way to multiply decimals using a lattice. Youtube videos by Julie Harland are organized at http://YourMathGal.com lattice3dec1.mp4For more great math videos visit: www.youtube.com/user/videosbyjulieharland/videos . Aligned to Common Core State Standard: 5.NBT.7
One-step multiplication and division equations with fractions and decimals
By Khan Academy
Learn how to solve equations in one step by multiplying or dividing a number from both sides.������������These problems involve decimals and fractions.
Box Multiplication: Partial Products
By Erica Carmody
Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place value and the properties of operations
Three-Digit by One Digit Multiplication with Partial Products: Grade 4
By University Of Houstan Mathematics Education
Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers