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Multiplying by Multiples of Ten
Grade Three · Lesson 14 · 4:55 · Animated lesson with English narration
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Transcript
Thirty times thirty. Split the second thirty into ten times three. Associative property. Move the parentheses. Split the first thirty into three times ten.
Associative property. Group the tens together. Ten times ten equals one hundred. Commutative property. Swap three and one hundred. Associative property. Three times three equals nine.
One hundred times nine equals nine hundred. So thirty times thirty equals nine hundred.
Transcript generated from the lesson narration.
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