Videos for multi-digit multiplication (grades 4-5)
Find here free online math videos on multi-digit multiplication, meant for 4th and 5th grades.
These videos match the topics in Math Mammoth Multiplication 2 worktext (Blue Series).
"Scales" (pan balance) problems (2 videos)
Multiply in parts 1 (partial products) – 2-digit by 1-digit multiplication
Multiply in parts 2 – partial products algorithm for 3-digit numbers and money amounts
Estimating in multiplication: round the factors!
Multiplying in columns, the standard way — 1-digit by 2,3,4-digit multiplication; standard algorithm
Multiplying money amounts & money word problems (2 videos)
Multiply by whole tens in columns — aka a shortcut for 2-digit multiplication when one factor is a multiple of ten
The standard multiplication algorithm with a two-digit multiplier — aka two-digit multiplication, and why we add a zero on the 2nd line (2 videos)
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