'123 rounds' diaporamas de présentation

Note the shape that disappears, then estimate the number to 1 significant figure e.g.

Note the shape that disappears, then estimate the number to 1 significant figure e.g. 123 rounds to 100 57.1 rounds to 60 etc. 128. 275. 18.3. 37.2. 4.5. 3999. 19.9. 1280. 128. 275. 18.3. 4.5. 3999. 19.9. 1280. 128. 275. 18.3. 4.5. 19.9. 1280. 128. 18.3. 4.5. 19.9. 1280.

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