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    • ▾2nd grade
      • ▸Add and subtract within 20
        • •Add to count rectangular arrays
        • •Mentally add and subtract within 20
      • ▾Place value
        • •Place value with hundreds
        • •Convert between various representations, numbers within 1000
        • •Counting and skip-counting within 1000
        • •Intro to even and odd
        • •Compare three-digit numbers
      • ▸Add and subtract within 100
        • •Mentally add and subtract within 100
        • •Add and subtract within 100, abstract
        • •One-step word problems, add and subtract within 100
        • •Two-step word problems, add and subtract within 100
      • ▸Add and subtract within 1,000
        • •Add and subtract within 1,000
        • •Add multiple two-digit numbers
        • •Mentally add or subtract powers of ten
      • ▸Money and time
        • •Money word problems, including dollars
        • •Tell and write time, five minute increments
      • ▸Measurement
        • •Compare lengths by measuring
        • •Estimate lengths
        • •Add and subtract within 100 to solve word problems involving lengths
        • •Add and subtract within 100 on the number line
      • ▸Data
        • •Plot measurements on a line plot
        • •Draw picture and bar graphs
      • ▸Geometry
        • •Partition rectangles into rows and columns
        • •Area of a rectangle by counting unit squares
        • •Partition circles and rectangles into equal shares
        • •Draw shapes with certain attributes
        • •Intro to tessellations
     › 2nd grade › Place value

    Place value with hundreds

    Students will learn how to represent numbers within 1000 using place-value blocks. Next, students will learn how to identify the value of a digit, for any number less than 1000. For example, the value of 4 in 342 is 40. Here's an excellent video you can show your students. They can practice this skill here. After that, students will use their understanding of place value to rearrange digits to make the smallest or largest number possible. For example, given the digits 9, 0, 4, the smallest number they can make is 49, and the largest is 904. To learn how to create the largest number, students can watch this and practice here.

    Intro to place value by Khan Academy

    Hundreds, tens, and ones by Khan Academy

    Conclude by leading this investigation:

    Addition Boomerang
    by MathPickle

    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.

    Lessons and practice problems