Series 4 (commonly known as Seasons 5 and 6) is the 4th series of .
Understanding Place Value
Numbers 16-20 with Numberblocks 16, 17, 18, 19, 20
Multiplication and division signs
Orders of magnitude with Numberblocks 30, 40, 50, 60, 70, 80, and 90
Counting to 100
This series marks the debut of 16-22, 30, 40, 50, 60, 70, 80, 90, 100, 1000, 7000, 10000, 90000, 100000, and 1000000.
This series has the most new Numberblocks introduced. Unlike other series, this season is split into three levels; one tenth is considered Yellow Level Three, another fifth (21-50) is considered Green Level Four, and the last fifth is considered Blue Level Five (60+).
This is the last series to air in the 2010s decade, as the next series is the first to air in the 2020s decade.
Season 5 Season 6
High Five! One, Another One, Two, Three, One, Two, Three!, Four, Five, Three Little Pigs, Off We Go, How to Count, Stampolines, The Whole of Me, The Terrible Twos, Holes, Hide and Seek
Ten out of Ten Six, Seven, Eight, Nine, Ten, Just Add One, Blast Off, Counting Sheep, Double Trouble, The Three Threes, Odds and Evens, Fluffies, The Two Tree, Numberblock Castle, Ten Green Bottles
Number Fun Once Upon A Time, Blockzilla, The Numberblocks Express, Fruit Salad, Zero, Now We Are Six To Ten, Numberblobs, Building Blocks, Peekaboo!, Hiccups, What's the Difference?, Numberblock Rally, Five and Friends, Octoblock to the Rescue!, Ten Again
Fifteen and Friends Flatland, Pattern Palace, The Legend of Big Tum, Mirror, Mirror, The Wrong Number, Eleven, Twelve, The Way of the Rectangle, Ride the Rays, Block Star, Thirteen, Fourteen, Fifteen, Tween Scenes, Step Squads
Season 5 Fifteen's Minute of Fame, On Your Head, Ten's Place, Balancing Bridge, Sixteen, Square Club, Seventeen, Eighteen, Loop the Loop, Nineteen, Twenty, Tall Stories, Flights of Fancy, I Can Count to Twenty, Heist
Season 6 Sign of the Times, Fun Times Fair, The Lair of Shares, Terrible Twosday, Divide and Drive, Twenty-One and On, We're Going on a Square Hunt, Thirty's Big Top, Land of the Giants, Fifty, Sixty's High Score, The Big One, One Hundred, One Thousand and One, More To Explore
Season 7 Your Turn, Now You See Us, Ten's Top Ten, What's My Number?, Fun Times One Times Table, The Many Friends of Twenty, Ten Vaulting, Twoland, Two Times Shoe Shop, Odd Side Story, How Rectangly!, Rectangle Racers, The Team Factor, Hidden Talents, Making Patterns
Season 8 Now in 3D, Club Picnic, Too Many Threes, Circus of Threes, Figure It Out, Snow Day Doubles, Steps Versus Squares, Puzzle Square, Four on the Floor, Sky High Fives, One Giant Step Squad, Square on the Moon, Heroes With Zeroes, What If?, 100 Ways to Leave the Planet
The Treasure of Hexagon Island, Double Back
Numberblocks Theme Song, Fourth Wall Breaks