Three charts. The first is the one for a workshop: every 64th of an inch as a fraction in lowest terms, its exact decimal and its size in millimeters. The second covers the fractions school math uses, halves to twelfths and sixteenths, with the repeating ones marked by a bar. The third is sixteenths in type big enough for a wall.
Every decimal is worked out from the fraction and read back to check it matches exactly, so 1/3 shows as 0.3 with a bar rather than a rounded 0.33. An inch is exactly 25.4 millimeters.
Decimal to fraction chart, 1/64 inch
Every 64th of an inch as a fraction, an exact decimal and millimeters.
Fraction to decimal chart
All 53 fractions in lowest terms with denominators 2 to 12 and 16, with repeating decimals marked.
Sixteenths chart, large print
1/16 to 1 in big type for the wall.
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