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1 minute (min) = ___ seconds (s)
60
1 hour (hr) = ___ minutes (min)
60
1 day = ___ hours (hr)
24
1 week = ___ days
7
1 week = _____ months
0.230137
1 month = _____weeks
4.34524
1 year = ___ months
12
1 year ≈ _____ days
365.256
1 century = ____ years
100
1 inch (in) = ___ centimeters (cm)
2.54
1 foot (ft) = ___ inches (in. or in)
12
1 yard (yd) = ___ feet (ft)
3
1 mile (mi) = ____ feet (ft)
5,280
1 sq. mile (sq. mi, mi²) = ____ acres
640
1 meter (m) ≈ ______ feet (ft)
3.28084
1 foot (ft) ≈ ______ meter (m)
0.3048
1 nickel = ___ cents (pennies, ¢)
5
1 dime = ___ cents (¢)
10
1 quarter = ___ cents (¢)
25
1 half dollar = ___ cents (¢)
50
1 dollar ($) = ____ cents (¢)
100
1 silver dollar = ____ cents (¢)
100
Formula to calculate °C from °F
°C = 5(°F - 32)/9
Formula to calculate °C from K
°C ≈ K - 273.15
1 teaspoon (tsp) = ____ ounce (oz)
1/6
1 tablespoon (tbs) = ____ ounce (oz)
0.5
1 cup = ____ ounces (oz)
8
1 pint (pt) = ____ ounces (oz)
16
1 quart (qt) = ____ ounces (oz)
32
1 half gallon = ____ ounces (oz)
64
1 gallon (gal) = ____ ounces (oz)
128
1 gallon (gal) = ____ in³
231
1 cubic foot (ft³) ≈ ____ liters (L)
28.3168
1 cubic inch (in³) ≈ _____ 1 ounce (oz, or fl. oz)
0.554113
1 cubic inch (in³) ≈ _____ tablespoon (tbs)
1.10823
1 cubic inch (in³) ≈ _____ teaspoon (tsp)
3.32468
1 cubic foot (ft³) ≈ ____ gallons (gal)
7.481
1 ounce (oz, or fl. oz) ≈ ____ in³
1.8047
1 ounce (oz, or fl. oz) ≈ _____ ml
29.574
1 liter (l) ≈ ____ quarts (qt)
1.0567
1 pound (lb) = ____ ounces (oz)
16
1 pound (lb) ≈ _____ grams (g)
453.592
1 ounce (oz) ≈ ____ g
28.350
1 ton = _____ pounds (lb)
2000
1 revolution (rev) = ____ degrees (deg, °)
360
π radians (rad) = ____ degrees (deg, °)
180
1 degree (deg, °) = ____ minutes (') [angle measure]
60
1 minute (') = ____ seconds (") [angle measure]
60
Prefix: 10⁻⁹
nano (n)
Prefix: 10⁻⁶
micro (μ)
Prefix: 10⁻³
milli (m)
Prefix: 10⁻²
centi (c)
Prefix: 10⁻¹
deci (d)
Prefix: 100
hecto (h)
Prefix: 10³
kilo (k)
Prefix: 10⁶
mega (M)
January has ___ days
31
February has ___ days
28
March has ___ days
31
April has ___ days
30
May has ___ days
31
June has ___ days
30
July has ___ days
31
August has ___ days
31
September has ___ days
30
October has ___ days
31
November has ___ days
30
December has ___ days
31
February has ___ days on leap years
29
Leap years are years divisible by four and not divisible by ____
100
Length of a football field (without end zones) = ____ yards (yd)
100
A card deck has ___ cards
52
____ each of spades, hearts, diamonds and clubs
13
Sometimes ____ jokers are added
2
Density (water) = gram/cubic centimeter (g/cc, g/cm³)
1
g = acceleration on earth ≈ _____ ft/s²
-32.174
Radius of the Earth ≈ ____ mi
3960
1 + x + x² + x³ + x⁴ + x⁵ + ... = ______ (x²<1)
(1-x)⁻¹
(D = diameter)
D = ____
2R
(C = circumference, R = radius)
C = ____ (with R)
2πR
(D = diameter, C = circumference)
C = ____ (with D)
πD
(K = area, R = radius)
K = ____ (with R)
πR²
(K = area, D = diameter)
K = ____ (with D)
(πD²)/4
(K = area, C = circumference)
K = ____ (with C)
(C²)/4π
(R = radius, c = chord)
c = ____ (with R)
2Rsin(θ/2)
cos(-a) =
cos(a)
cos(π ± a) =
-cos(a)
sin(-a) =
-sin(a)
cos(2a) =
cos²(a) - sin²(a)
sin(2a) =
2sin(a)cos(a)