You need to be able to read a ruler to the nearest …

 You need to be able to read a ruler to the nearest inch, quarter of an inch, half inch & eighth of an inch

You need to be able to read a ruler to the nearest centimeter & milliliter (10 mm in every cm) You need to be able to identify reasonable units of measure for various objects You need to be able to convert between units within the metric system and customary system

of measurement You need to be able to add, subtract, multiply and divide decimals CUSTOMARY RULER: INCHES

METRIC RULER: CENTIMETERS & MILLIMETERS (There are 10 millimeters in every centimeter.)

0.1 cm 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 cm = 10 mm 1 mm 2 mm 3 mm 4 mm 5 mm 6 mm 7 mm 8 mm 9 mm Refer to questions #1-9 on the On-line Review for example questions of reading a ruler.

RELATE UNITS OF MEASURE TO THINGS YOU SEE IN LIFE SO YOU CAN MAKE COMPARISONS

Metric Measurement System: Length

Unit

Model

1 millimeter (mm) thickness of a dime

1 centimeter (cm) half the of a penny

1 meter (m)

width of a door

1 kilometer (km) six (6) city blocks

Customary Measurement System: Length

Unit

Model

1 inch (in)

width of a quarter

1 foot (ft)

length of a large shoe

1 yard (yd)

length from nose to fingertip

1 mile (mi)

10 city blocks

Metric Measurement System: Length

Unit

Model

1 milligram (mg) a grain of salt

1 gram (g)

small paper clip

5 grams

about the mass of a nickel

1 kilogram (kg) six medium apples

Customary Measurement System: Length

Unit

Model

1 ounce (oz) pencil

1 pound (lb) 1 ton (T)

your Math notebook A small passenger car

Metric Measurement System: Capacity

Unit

Model

1 milliliter (mL) eyedropper

1 liter (L)

a small pitcher a little more than a quart

Customary Measurement System: Capacity

Unit

Model

fluid ounces (fl oz) 2 tablespoons of liquid

1 cup (c) = 8 fl oz a small coffee/tea cup

1 pint (pt) = 2 c

small ice cream container

1 quart (qt) = 2 pt a large orange juice container

1 gallon (gal) = 4 qt a large jug of milk

BENCHMARK COMPARISONS between the Metric and Customary System of Measurement

25 mm approximately 1 inch

2.5 cm

about

1 inch

30 cm or 300 mm

1 foot

1 m 1.5 km

close to about

40 inches (a little more than a yard) 1 mile

28 grams approximately 1 ounce 1kilograms a little more than 2 pounds

1 liter approximately 1 quart

"King Henry Died By Drinking Chocolate Milk"

Step 1: If you are given an unknown before a known, switch the order.

____km = 77 m

77 m = ____km

Step 2: State the "King Henry" phrase and write the letters.

Step 3: Circle where you are starting and "swoop" to where you need to end.

The base (B) is meters (m), liters (L) or grams (g)

km h d m d

cm mm

Step 4: Move the decimal the same number of places. REMEMBER, if you don't see a decimal it is at

. . the end! MAKE SURE you move the SAME number of places in the SAME direction!!! 77 = 0 077

Important information from your notes you need to have memorized!!!

smallest unit largest unit

Length inch (in) foot (ft) = 12 in yard (yd) = 3 yd mile (mi) = 1760 yd

Weight ounces (oz) pounds (lb) = 16 oz ton (T) = 2000 lbs.

Capacity fluid ounces (fl oz) cup (c) = 8 fl oz pint (pt) = 2 c quart (qt) = 2 pt gallon (gal) = 4 qt

HELPFUL HINTS:

For weight, the abbreviation for pounds (lb) looks like what number?

16 oz = 1 lb

"T for ton and T for 2__ __ __ t...o...n" (fill in with zeros) For capacity, draw "Gallon Golf".

2,000 lbs = 1 T

Larger unit to smaller unit ("small-tiply") x

Smaller unit to larger unit (L rotated make the division "house")

COSTUMARY CONVERSIONS STEP BY STEP Step 1: If you are given an unknown before a known, switch the order. Step 2: Ask yourself, "small to larger or large to small" and write, S L ( ) OR L Step 3: Write the related units you should have memorized Step 4: Solve.

s (x)

WHEN ADDING OR SUBTRACTING DECIMALS YOU MUST LINE UP THE DECIMAL PLACES!!!!

REFER TO YOUR DECIMALS QUIZ.

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