Proof Index
TOC
Courses
Subreddit
Blog
Search
Search subtopics
Search all
▾
3rd grade
▾
Addition, subtraction, estimation
•
Mentally add within 1000
•
Round to the nearest 10 or 100
•
Add and subtract within 1000, abstract
▸
Multiplication
•
Multiplication using rectangular arrays and equal groups, concrete and visual
•
Multiplication as repeated addition
•
Multiply, abstract
▸
Division
•
Divide using equal groups
•
Division using repeated subtraction
•
Divide, abstract
▸
Fractions
•
Equal shares of shapes and unit fractions
•
Plot fractions on the number line
•
Relating fractions to 1
•
Representing whole numbers as fractions
•
Comparing fractions with like numerators, denominators, or both
▸
Relating multiplication and division
•
Missing number problems, multiplication and division
•
Relating multiplication to division
•
Use properties to multiply and divide
•
Multiply one-digit numbers by multiples of 10
▸
Arithmetic patterns and problem solving
•
Two-step word problems
•
Patterns in addition and multiplication
•
Intro to the triangular numbers
•
Intro to the Fibonacci sequence
•
Intro to Pascal's triangle
▸
Geometry
•
Shape heirarchy
•
Area of composite rectangles by counting unit squares
•
Area and units of measure
•
Area as multiplication
•
Area, perimeter, and how they're related
▸
Time, measurement, and data
•
Tell and write time, minute increments
•
Measure and estimate volumes and masses
•
Scaled bar and picture graphs
•
Line plots with fractions
›
3rd grade
›
Addition, subtraction, estimation
›
Add and subtract within 1000, abstract
›
Other resources
Subtracting within 1000
Breaking apart to subtract within 1000
Mental math: Subtract a near multiple of 100 from a three-digit number by adjusting
Missing number for subtraction within 1000
Other resources
Subtracting by counting up
Subtracting three-digit numbers using the chip model
Subtracting three-digit numbers using the stamp game
Subtracting three-digit numbers using the standard algorithm
Subtracting within 1000 using base ten blocks
Subtraction using partial differences
Subtract within 1000 (word problems)
Subtract within 1000 using a number line