Interactive Practice Station
Test your understanding of all 11 multi-digit math strategies. Choose a concept, solve the problem, and verify your step-by-step thinking.
Represent 4-Digit Numbers
[Place Value Blocks]Which number is shown by 3 thousands, 4 hundreds, 0 tens, and 8 ones?
Master Your Math.
Build Strong Habits.
NUMERIX provides clear, step-by-step guides to help 3rd graders master multi-digit math, from place value to fluent addition and subtraction.
Mastering thousands, hundreds, tens, and ones with precision and speed.
Rounding multi-digit numbers to the nearest ten, hundred, or thousand.
Estimating sums and differences to verify your math before solving.
Key Skills Covered
Fluently adding within 1,000 using properties and partial sums.
Decomposing numbers and using addition to solve subtraction problems.
Applying addition patterns and properties to simplify complex equations.
Practice Modules
Need extra help with a concept?
Check out our full library of math lessons and practice exercises designed for 3rd graders.