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Place values and number sense
-Place values
-Convert between place values
-Compare numbers up to billions
- Word names for numbers
- Roman numerals
- Rounding
- Even and odd aritmetic patterns
- Understanding integers
- Compare integers
- Put integers in order
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Place values
In our decimal number system, the value of a digit depends on its place, or position, in the number.
Identify the place-value position of the digit 9 in 29,457
The digit 9 is in the thousands place.
Identify the place value position of the digit 7 in 427986
hundred thousands
ten thousands
thousands
hundreds
tens
ones