A 60-minute lesson in which students will understand how 3-digit numbers can be decomposed.
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Decomposing and Expanding 3-Digit Numbers
60 mins
|
Suitable for grades:
1 - 2
Curriculum
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:
Math 1.2(B)
Use concrete and pictorial models to compose and decompose numbers up to 120 in more than one way as so many hundreds, so many tens, and so many ones;
Math 1.2(C)
Use objects, pictures, and expanded and standard forms to represent numbers up to 120;
Math 2.2(A)
Use concrete and pictorial models to compose and decompose numbers up to 1,200 in more than one way as a sum of so many thousands, hundreds, tens, and ones;
Math 2.2(B)
Use standard, word, and expanded forms to represent numbers up to 1,200;
Author
Teach Starter Publishing
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