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Lesson 2: Tens

# Place value example: 42

Sal shows 42 as 4 tens and 2 ones.

## Want to join the conversation?

• what does < > mean
• < means "less than."
> means "greater than."

4 < 10; 4 is less than 10.
5 > 1; 5 is greater than 1.
• What is 4 tens and 19 ones? 59? What is it?
• Yes, you are correct. It is 59, because 4 tens means that you have 40 ones and 40 + 19 = 59.
• Is there a video for place value for decimals?
• I need help with this problem what is 1 ten plus 18 ones make
• 18 ones is just 18, 1 ten is 10
What’s 10+18?
Here you can just add the tens so it’ll be easier
Easy, 28! Hope that helped!
-Memo5:D
• Do negative numbers have place value?
• Yes they do its similar to the one positive numbers use
• At , what number system is Sal referring to?
• The decimal numeral system (also known as base 10).
• What is the standard form of 4 tens + 5 ones + 1 hundreds?
• It is 145, which can be broken down into 1 hundred, 4 tens and 5 ones (100 + 40 + 5 = 145). Hope it helps