Preteach SkillsRegroup Addition and Subtraction
2.NBT.7*Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.
Place Value Activities 2.NBT.1
100 can be thought of as a bundle of ten tens — called a “hundred.”
-The numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to one, two, three, four, five, six, seven, eight, or nine hundreds (and 0 tens and 0 ones).
Math Journal: Choose a number between 100 and 999. Show how many ways you can represent this number.
Math Stations: Place Value Challenge, Word Problems
Abacus Place Value
Addition and Subtraction Practice