NBT1

This standard helps strengthen the students understanding of the base ten number system. They need to understand that the same digit in one place is ten times larger than that same digit one place to its right and that it is 1/10 the size of the place to its left.

Example: In the number 555,555 the five in the tens place is worth 50. That is ten times larger than the 5 to its right that is in the ones place and worth 5. The 5 in the tens place worth 50 is also 1/10 of the 5 in the hundreds place worth 500.