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Lesson 4: Regrouping whole numbers

# Adding whole numbers by their place values

Lindsay adds numbers like 19 thousands + 7 tens by thinking about their place values.

## Want to join the conversation?

• would 3 hundreds + 17 tens equal 470?
• yes, u r correct
• why would the answer be 72,000
• because 22,000 is equal to 20,000+2,000 so 50,000+22,000=72,000
• how do you add 10000,000 +1096548647346
• You break them into small parts and the answer is 1.0965487e+12 in numbers.
• When you use the blocks do you count them based on the performance task or by how much it is worth?
• is 1000 x 5000 =1000000000
• Why do some people pronounce numbers the wrong way on purpose? An example: 19 hundred
• 19 hundred is a short way of saying one thousand 9 hundred.
people say it because its true. 19 * 100 = 1900
• Do we need to watch the videos?