Master factors, multiples, fractions, and decimal operations. This is the foundation every later unit relies on.
Quick read-throughs in plain language — then hit the videos below.
A factor is a number that goes into another evenly. The factors of 12 are 1, 2, 3, 4, 6, and 12. A multiple is what you get when you skip-count: 4, 8, 12, 16…
GCF = biggest number two numbers share. LCM = smallest number both divide into. For 8 and 12, GCF is 4 and LCM is 24.
Try it
Find the GCF and LCM of 6 and 9.
Tip: Listing factors helps on small numbers. For bigger ones, try breaking into primes.
By the end of this unit, you should be able to:
Each video covers one topic from this unit — read the short blurb below to find the right one.
Find common denominators, then add or subtract.
Watch on YouTubeFlip the second fraction, then multiply (keep–change–flip).
Watch on YouTubeLine up the decimal points, then subtract like whole numbers.
Watch on YouTubeA second take on multiplying fractions with extra examples.
Watch on YouTubeSame and different denominators, side by side.
Watch on YouTubeAdam's curated problem sets — preview here or open in Google Drive.
Mixed practice covering the unit's core operations.
Hand-picked links from Khan Academy and trusted worksheet libraries.
Free Grade 6 worksheets across all topics.
Open resourceA few quick questions to make sure the big ideas stuck. Retake as many times as you want.
Unit 1: Number System & Operations
What is 3/4 ÷ 2/3?
