Formatting Numbers Use Digits for Numbers 10 The
Formatting Numbers
Use Digits for Numbers > 10 The lab required the use of 16 paperclips and a space heater. Exception: A sentence cannot begin with a numeral Options: • Spell out number if the first word of the sentence • Rewrite the sentence so number is not first
Other < 11 Exceptions 1) Parts of a report Lab 1, Figure 2 2) Anything with a symbol: Percentages and ratios Measurements and currency Times and dates 12%, 1: 4 12 mm, $54 October 12 3) Figures (numbers in tables, equations or diagram) 1995 2005 2015 5 4 5
Usually Spell Out Ten or Fewer • • • The team ran 25 trials. There were eight teeth on the gear. The diameter was 3 cm and materials cost $7. The due date is November 4. Thirty-five bricks were used. In the design, 35 bricks were used. The gear ratio was calculated as 3: 1. Lab 7 will be presented today. The front view is shown in Figure 2.
Round Off to Two Decimal Places • Engineers are more practical than mathematicians • Real-world measures are useful to the 100 s, at best 10. 3333 10. 14285714 10. 14 3. 16227766 3. 16
Use Leading & Trailing Zeroes • Use a zero before any decimal • If some numbers have a decimal, all should. 8 0. 80 1 1. 00 . 92 0. 92
Software Will Line Up Decimals • Try “decimal tab” to line up numbers (Mac only): • Use automatic rounding in Excel:
Formatting Numbers • Spell out numbers ten or fewer • Usually use digits when 11 or greater • Only two decimal places with leading and trailing zeroes • Exploit software features
Formatting Numbers QUESTIONS?
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