6.NS.B.4 Grade 6 · The Number SystemUse prime factorization to find the greatest common factor of two whole numbers less than or equal to 100 and the least common multiple of two whole numbers less than or equal to 12.Common Core State Standards for Mathematics, as adopted in the Massachusetts Curriculum Framework for Mathematics (2017), Grade 6.
Play the game: Factors and Patternsfree, no sign-up →The number line keeps going: below zero, between the whole numbers, and far past 100. Every position is a place you can land on and see.
Every page is free and open — nothing to install, no account, and it works on a phone or a classroom board. Every number has its own color: 1 red, 2 orange, 3 yellow, 4 green, 5 blue, 6 purple, 7 brown, 8 pink, 9 cyan, and a number is that many colored dots.
6.NS.A.1Dividing a fraction by a fraction: how many 3/4-cup servings fit in 2/3 of a cup, checked by multiplying6.NS.B.2Divide multi-digit numbers fluently with the standard algorithm6.NS.B.3Add, subtract, multiply and divide multi-digit decimals fluently6.NS.C.5Positive and negative numbers in real life: temperature, sea level, money, and what 0 means in each6.NS.C.6Opposites are mirror images across 0; −(−3) = 3; numbers on the extended line6.NS.C.7Order and absolute value: which is warmer, and which is further from 06.NS.C.8Points in all four quadrants; distance between points that share x or yColorMyMath · getridoftheteacher.com · every number has its own color, and a number is that many colored dots. Matching a game to a standard is a judgement call; the official text is at doe.mass.edu.