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2nd Grade Math
5. 2.NBT.A.1
5.4 Place value models up to 999
Place Value Models up to 999
See how hundreds blocks, tens rods, and ones cubes show the value of any number up to 999 through simple, visual examples.
What You'll Learn
Identify a hundreds flat, a tens rod, and a ones cube as the three base ten block shapes used up to 999
Count each group of blocks separately, then read the number as hundreds, tens, and ones together
Connect a three digit number to its blocks using the pattern \( 100a + 10b + c \)
Match the number of flats, rods, and cubes to the hundreds, tens, and ones digits in a number
Rebuild the same number with different combinations of blocks, such as trading ten rods for one flat
Compare two place value models to decide which one shows a greater number
What You'll Practice
1
Identifying numbers shown in place value block diagrams
2
Counting hundreds, tens, and ones blocks to find totals
3
Reading three-digit numbers from visual models
Why This Matters
Place value is the foundation of all number work in math. Understanding how digits represent different values helps you add, subtract, multiply, divide, and work with larger numbers throughout elementary math and beyond.
This Unit Includes
1 Video lesson
Practice exercises
Learning resources
Skills
Place Value
Base-Ten Blocks
Number Sense
Hundreds
Tens and Ones
Visual Models

OH Curriculum Aligned