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3rd Grade Math
1. 3.OA.A.1
1.2 Multiplying Digits with 0 and 1 Up to 999
Multiplying Digits with 0 and 1 Up to 999
Master two of the fastest multiplication shortcuts: the zero property and the identity property, using numbers up to 999.
What You'll Learn
Recognize the zero property of multiplication: \( n \times 0 = 0 \) for any number n up to 999
Recognize the identity property of multiplication: \( n \times 1 = n \) for any number n up to 999
Apply both properties instantly without long multiplication, even for three-digit numbers
Compare the zero property to the identity property to avoid mixing up the two rules
Use these properties as quick mental checks before solving larger multiplication problems
What You'll Practice
1
Multiplying single, two-digit, and three-digit numbers by 0
2
Multiplying numbers up to 999 by 1
3
Solving mixed problems with both 0 and 1 as factors
Why This Matters
Mastering multiplication by 0 and 1 builds the foundation for all multiplication facts and algebraic thinking. These special properties appear throughout math, from solving equations to simplifying expressions, making them essential building blocks for success.
This Unit Includes
1 Video lesson
Practice exercises
Learning resources
Skills
Multiplication
Zero Property
Identity Property
Basic Operations
Number Sense
OH Curriculum Aligned