math for ACT
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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IMAGINARY NUMBERS | show 🗑
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show | 2
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show | 1 and itself
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show | divisible by more than just 1 and itself
eg..4,6,8,9,10,12,14,15...
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show | numbers are multiplied by themselves.
eg..2x2=4 3x3=9 1,4,9,16,25,36...
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cubed means | show 🗑
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show | perimeter=side+side+side
area=1/2bh
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square formulas | show 🗑
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rectangle formulas | show 🗑
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show | perimeter = 2(l+w), or 2l +2w
Area =bh
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Trapezoid formulas | show 🗑
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show | circumference = 2pieR or pieD
area = pieR2
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cube formulas | show 🗑
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rectangular prism | show 🗑
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show | .01 1%
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show | .1 10%
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show | .2 .20 20%
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show | .3 .30 30%
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2/5 = 4/10 | show 🗑
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1/2 = 5/10 = | show 🗑
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3/5 = 6/10 = | show 🗑
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7/10 = | show 🗑
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show | .8 .80 80%
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show | .9 .90 90%
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show | .25 25%
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show | .75 75%
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1/3 = | show 🗑
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2/3 = | show 🗑
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1/8 = | show 🗑
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show | .375 = .37 1/2 = 37 1/2%
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5/8 = | show 🗑
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show | .875 = .87 1/2 = 87 1/2%
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show | .16 2/3 = 16 2/3%
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show | .83 1/3 = 83 1/3%
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1 = | show 🗑
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show | 2.00 = 200%
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show | 3.5 = 3.50 = 350%
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show | yard
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36 inches = | show 🗑
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1760 yards = | show 🗑
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5280 ft = | show 🗑
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5 1/2 yards = | show 🗑
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show | 1 sq ft
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16 oz = | show 🗑
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show | 1 ton
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show | 1 cup
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2 cups | show 🗑
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show | 1 quart
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4 quarts | show 🗑
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8 dry quarts | show 🗑
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show | 1 bushel
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10 yrs | show 🗑
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100 yrs | show 🗑
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kilometer = | show 🗑
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show | 100 meters
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dekameter(dam) | show 🗑
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show | 1 meter
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1000 millimeters(mm) | show 🗑
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show | 1 liter
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1000 liters | show 🗑
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show | quotient divisor dividend ratio parts
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show | formed by two intersecting lines,across from each other,always equal
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adjacent angles | show 🗑
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show | 90 degrees
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show | measures 180 degrees
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angle bisector | show 🗑
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show | two angles whose total is 180 degrees
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show | two angles whose total is 90 degrees
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show | two points
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show | never meet; slopes are the same
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show | meet at right angles; slopes are opposite reciprocals(ex: 1/3 and -3)
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polygon | show 🗑
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regular polygon | show 🗑
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show | three sided polygon; interior is 180 degrees
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show | all sides are equal
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isosceles triangle | show 🗑
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scalene triangle | show 🗑
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show | angles opposite equal sides are equal
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in a triangle - an exterior angle | show 🗑
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show | a line segment that connects the vertex and the midpoint of the opposite side
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show | four-sided polygon interior angles total 360 degrees
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parallelogram | show 🗑
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show | a parallelogram with equal sides
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show | a quadrilateral with two parallel sides
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pentagon | show 🗑
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show | SIX sided polygon
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show | a line segment from the center of the circle to the circle itself
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show | a line segment that starts and ends on the circle and goes through the center
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show | a line segment that starts and ends on the circle
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show | a part of the circle
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to reduce a fraction | show 🗑
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show | line them up and multiply straight across
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show | invert the second and multiply
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show | divide denominator into numerator
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order of operation | show 🗑
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show | another fraction
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show | express a fraction
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in an average question you should think | show 🗑
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show | do the opposite of addition and subtract 7
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3x + 7 = 28 the second step | show 🗑
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show | =
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show | x(multiply)
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show | x,y,z(your favorite variable
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show | x/100
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show | add
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one equation and two variables | show 🗑
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working backwards on math questions | show 🗑
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when you solve an inequality, remember if you multiply or divide by a negative number | show 🗑
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degrees in a circle | show 🗑
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degrees in a quadrilateral | show 🗑
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degrees in a line | show 🗑
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degrees in a perpendicular angle | show 🗑
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degrees in a triangle | show 🗑
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in geometry, because the problems are always drawn to scale | show 🗑
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if you have no diagram | show 🗑
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Transitive axiom | show 🗑
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show | Cross multiplying can be used only when the format is two fractions separated by an equal sign.
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reflexive | show 🗑
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axiom (a=a) | show 🗑
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Symmetric axiom | show 🗑
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show |
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cross multiplying in algebra | show 🗑
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Addition/Subtraction Method | show 🗑
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substitution method | show 🗑
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show | Graph each equation on the same graph. The coordinates of the intersection are the solution.
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show | add the exponents of the same bases: x4(x3) = x7.
9882.html#ixzz0knPnlwRf
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show | subtract the exponent of the divisor from the exponent of the dividend of the same base: x8/x3 = x5.
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show | Combine equations to eliminate one variable. The equations may need to be multiplied by a common multiple first.
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show | add/subtract like terms only
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multiply two polynomials | show 🗑
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show | first-outer-inner-last
is often used when multiply binomial
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binomial | show 🗑
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show | divide each term by the monomial
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show | make sure both are in descending order, then use long division (divide by first term, multiply, subtract, bring down).
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show | rate x time
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show | principal x rate x time
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show | rate of work x time worked
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How many irrational numbers are between 1 and 6 | show 🗑
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A number is divisible by 2 if its last digit is | show 🗑
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show | 168 is divisible by 3 since the sum of its digits is 15 (1+6+8=15), and 15 is divisible by 3.
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show | 316 is divisible by 4 since its last two digits are 16 and 16 is divisible by 4.
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show | 195
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show | 168 is divisible by 6 since it is divisible by 2 AND it is divisible by 3.
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A number is divisible by 8 if the number formed by its last three digits is divisible by 8. | show 🗑
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show | 549 is divisible by 9 since the sum of its digits is 18 (5+4+9=18), and 18 is divisible by 9.
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show | 1 eg 1490 to the zero power = 1
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any number raised sto the 1st power is itself | show 🗑
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a negative sign applied to a group | show 🗑
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show | # Change the problem to an addition problem.
* Subtracting a negative becomes adding a positive.
* Subtracting a positive becomes adding a negative.
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show | neg+neg=neg
pos+pos=pos
poa+neg subtract keep the sign of the larger number
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show | * A positive times a positive equals a positive.
* A negative times a negative equals a positive.
* A positive times a negative equals a negative.
* A negative times a positive equals a negative.
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show | # positive divided by a positive equals a positive.
# A negative divided by a negative equals a positive.
# A positive divided by a negative equals a negative.
# A negative divided by a positive equals a negative.
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To cube a number | show 🗑
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a root is | show 🗑
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show | parentheses-exponents and roots-do all multiplication and division left to right -do what comes first do not do all multi than division do what comes first
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Created by:
carolyn495
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