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An illustration of base-ten blocks showing 10 ones forming a ten rod, and hinting at 10 ten rods forming a hundred flat.

An illustration of base-ten blocks showing 10 ones forming a ten rod, and hinting at 10 ten rods forming a hundred flat.

A base-ten block diagram showing 9 tens rods and 9 ones cubes arranged in a grid. A dotted arrow points to a single extra ones cube being added. A second panel shows 10 ones cubes grouping together with a curved arrow transforming them into 1 new tens rod, labeled '10 ones = 1 ten'. A third panel hints at 10 tens rods becoming a hundreds flat, labeled with a question mark and '10 tens = 1 hundred — coming soon!' Mehr sehen