lesson

Updated 1 month ago Β· 6 views
Imagine having a game board that holds 100 numbers in neat little boxes. Every time your finger moves, it follows a hidden math rule!
This special grid is called a hundred chart. It arranges the numbers 1 through 100 into 10 rows that go across and 10 columns that go straight down.
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What happens if you slide your finger from left to right along any line?
Secret Patterns in Rows
A row is a line of numbers that goes side-to-side across the chart. When you move one square to the right, you add 1.
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As you move right, the ones digit grows by 1 every time: 23, 24, 25! If you slide left instead, you subtract 1.
Row patterns are neat, but what magic happens when you jump straight down?
Secret Patterns in Columns
A column is a line of boxes that goes straight up and down. Every single time you jump down one box, you add 10.
πInteractive diagram
Why does jumping down add 10? Because one jump down skips an entire row of 10 numbers!