Grade 3
Indiana Math Standard: 3.CA.1
Fluently add and subtract multi-digit whole numbers using strategies and algorithms based on place value, properties of operations, and relationships between addition and subtraction.
How Many Ways: Add to 170
Four blanks, ten digits, one target. Students hunt for every pair of two-digit numbers that adds to 170 without repeating a digit, then work out why there are only four.
Broken Calculator: 2-Digit Addition
This calculator adds two-digit numbers wrong, the same way every time. Crack the rule, then predict its next mistake.
Broken Calculator: 2-Digit Subtraction
This calculator gets subtraction wrong the same way every time. Can your students crack its broken rule?
Adding and Subtracting Fruit
Use super cute fruit to introduce algebraic thinking to your young math students.
Back to School Math Worksheets
In these math problems, the solution is already given. But another number is missing!
Spring Math Worksheets: Addition and Subtraction
Four sets of 2-digit and 3-digit addition and subtraction practice. But the unknown isn’t where you expect it to be!
Addition: 3 Digits Plus 2 Digits (Multiple Solutions)
Typical practice problems don’t move students up Bloom’s Taxonomy. With this framework, you’ll see kids stop and really think about how to approach multi-digit addition.
Subtraction: 3 Digits Minus 2 Digits (Multiple Solutions)
Typical practice problems don’t move students up Bloom’s Taxonomy. With this framework, you’ll see kids stop and really think about how to approach multi-digit subtraction.
Math Curiosity: Palindromic Number Conjecture
Using this one weird trick, it seems that you can turn any number into a palindrome!