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Overview
Grade 3 Math
Number
7. Demonstrate an understanding of division related to multiplication facts up to 5 x 5
7.9 Dividing with Digits Up to 999
Dividing with Digits Up to 999
Learn to divide three-digit numbers by a one-digit divisor using place value breakdown, long division steps, and multiplication checks.
What You'll Learn
Identify the dividend, divisor, and quotient in a three-digit division problem like \(936 \div 3 = 312\).
Break a number apart by place value, such as \(900 + 30 + 6\), to divide each part separately.
Apply the long division steps: divide, multiply, subtract, and bring down the next digit.
Check a quotient using \( q \times d + r = n \), multiplying back and adding any remainder.
Recognize when a division does not split evenly, leaving a remainder.
Compare partial-quotient strategies with standard long division to pick an efficient method.
What You'll Practice
1
Dividing 2-digit and 3-digit numbers by single-digit divisors
2
Computing division problems with dividends up to 999
3
Solving multi-step division calculations with various digit combinations
Why This Matters
Mastering division with larger numbers is essential for real-world math like splitting costs, calculating rates, and understanding fractions and decimals. This skill builds the foundation for long division, algebra, and problem-solving in science and everyday life.
This Unit Includes
1 Video lesson
Practice exercises
Learning resources
Skills
Division
Multi-Digit Numbers
Place Value
Quotients
Remainders
Arithmetic
NS Curriculum Aligned