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Student Instructions
Click 
.
Watch the 
about 2-digit numbers.
Click the base 10 pieces to 
them to the box to build the number.
Use the 
to write the expanded notation equation in the boxes.
Last, click the 
in the top right corner to submit your work.
Teacher Notes (not visible to students)
This lesson aligns with common core standards for operations in base 10 including: Understand place value. CCSS.MATH.CONTENT.2.NBT.A.1 Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones. Understand the following as special cases: CCSS.MATH.CONTENT.2.NBT.A.1.A 100 can be thought of as a bundle of ten tens — called a "hundred." CCSS.MATH.CONTENT.2.NBT.A.1.B 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). You can find more math videos here: https://www.youtube.com/playlist?list=PLZ-dFewIqnkzA2fD9orT3n4yCUl-a56cW
