3rd Grade Videos - Use place value understanding and properties of operations to perform multi-digit arithmetic.

Use place value understanding to round whole numbers to the nearest 10 or 100.

Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.

Multiply one-digit whole numbers by multiples of 10 in the range 10-90 (e.g., 9 x 80, 5 x 60) using strategies based on place value and properties of operations.

Screenshot Name / Description Flag? Rating
Khan - Round and Multiply Whole Numbers
Work through a practice problem involving rounding and multidigit multiplication (1:50)
Khan - Rounding 1
Lean about rounding numbers with Sal (4:22)
Khan - Regrouping (Borrowing) Twice Example
Subtract hundreds from thousands in this practice problem (8:47)

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