1.3 Measures and Accuracy

• What is the conversion factor between centimeters and meters?

  1 m = 100 cm
• One gram is equal to 1000 milligrams.

  True
• A liter is equal to 100 centiliters.
• One pound is equal to 16 ounces.
• How many significant figures are in the number 123.45?

  5
• Trailing zeros after a decimal point are significant.
• Steps to round a number to significant figures

  1️⃣ Identify significant digits

  2️⃣ Look at the digit to the right

  3️⃣ Round up if 5 or greater

  4️⃣ Drop digits to the right

  5️⃣ Replace with zeros if needed
• Steps to round a number to significant figures

  1️⃣ Identify the digits that are significant

  2️⃣ Look at the digit to the right of the last significant figure

  3️⃣ Round up if that digit is 5 or greater; otherwise, round down

  4️⃣ Drop the digits to the right, replacing with zeros if necessary
• What are decimal places in a number?

  Digits to the right of the decimal point
• To convert a decimal to a percentage, you multiply by 100
• Match the metric unit with its category:

  Length ↔️ Meter

  Weight/Mass ↔️ Gram

  Volume ↔️ Liter
• A kilometer is equal to 1000 meters.
• How many milliliters are in a centiliter?

  10 ml
• What is the conversion factor between inches and feet?

  1 ft = 12 in
• One gallon is equal to 8 pints.


  True
• Steps to convert within the metric system

  1️⃣ Identify the starting unit

  2️⃣ Identify the target unit

  3️⃣ Determine the conversion factor

  4️⃣ Multiply or divide accordingly
• Zeros between non-zero digits are significant.


  True
• How many significant figures are in the number 0.0034?

  2
• To round a number to a specified number of significant figures, you first need to identify
• When rounding to significant figures, if the digit to the right of the last significant figure is 5, you always round up.

  True
• Match the decimal place with its significance:

  Tenths ↔️ Precision to the nearest tenth

  Hundredths ↔️ Precision to the nearest hundredth

  Thousandths ↔️ Precision to the nearest thousandth
• When converting 0.25 to a percentage, the result is 25%.

  True
• How many millimeters are in a centimeter?

  10
• There are 1000 kilograms in a tonne.


  True
• Match the imperial unit with its category:

  Length ↔️ Inch

  Weight/Mass ↔️ Ounce

  Volume ↔️ Pint
• How many ounces are in a pound?

  16
• How many ounces are in 1 pound?

  16
• 1 meter is equal to 100 centimeters.


  True
• How many grams are in 1 kilogram?

  1000
• Match the metric units of volume with their symbols:

  Milliliter ↔️ ml

  Centiliter ↔️ cl

  Liter ↔️ l
• How many inches are in 1 foot?

  12
• 1 pound is equal to 16 ounces.
• How many pints are in 1 gallon?

  8
• What is the conversion factor to convert meters to feet?

  3.28
• Arrange the following significant figure rules from general to specific:

  1️⃣ All non-zero digits are significant

  2️⃣ Zeros between non-zero digits are significant

  3️⃣ Trailing zeros after a decimal point are significant

  4️⃣ Leading zeros are not significant
• All non-zero digits in a number are significant.


  True
• Leading zeros in a number are not significant.
• Round 123.45 to 3 significant figures.

  123
• Match the decimal place with its significance:

  Tenths ↔️ 0.1

  Hundredths ↔️ 0.01

  Thousandths ↔️ 0.001
• What does the tenths place indicate in a decimal number?

  Nearest tenth