Unit+2

//For example, recognize that 700 divided by 70 equals 10 by applying concepts of place value and division.// || [|NCTM - Illuminations lesson making 1,000,000] ||  ||   || || [|math coach's corner - rounding on an open number line] ||  ||   ||
 * Unit 2 - Addition and Subtraction with Multi-Digit Numbers ||  ||   ||   ||
 * ** 4.NBT.1 ** Recognize that in a multi-digit whole number, a digit in one place represents ten times what it represents In the place to its right.
 * 4.NBT.2 || [|NCTM - Illuminations lesson using census data] ||  ||   ||
 * 4.NBT.3