All of the following are natural resources EXCEPT -
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expanded form
A way to write numbers that shows the place value of each digit.
base ten blocks
These are plastic cubes, rods, flats, and blocks used to teach place value. Cubes represent ones, rods represent tens, flats represent hundreds, and blocks represent thousands.
ones place
the first digit in a whole number
hundreds place
the third digit in a whole number
addition
+, sum
subtraction
-, difference, how many more, left, spent, give away
standard form
20
tens place
the second digit in a whole number; one of these means 10 ones
word form
A way to write numbers by using words.
place value
The value of each digit in a number based on the location of the digit