Flashcards
Maths Formulas (Form 3)
Cards in this deck (18)
- 1Standard formStandard form:
no x 10 power of no
( ex: 90000 = 9 x 10 to the power of 4 ) - 2Algebraic Expressionsexpression:
3x + 7y
equation:
2m + 3p = 12 - 3PercentagesPercentage of a quantity:
percentage/ 100 x amount - 4—Percentage increase and decrease:
% change = change/ original x 100% - 5—Reverse percentages:
Before/ after x amount
(table of before, after, change) - 6InterestSimple Interest:
I = PTR/ 100 - 7Pythagoras theoremPythagoras theorem:
c squared = a squared + b squared - 8—IMPORTANT:
Triangles:
3-4-5
5-12-13
7-24-25 - 9CylindersCylinders:
volume of prism:
area of cross section x H
( cross sectional area = pie x r squared) - 10—Cylinders:
Volume of a cylinder:
pie x r squared x h - 11TrigonometryTrigonometry ratios:
SOH CAH TOA
sin = opp/hyp
cosine = adj/hyp
tangent = opp/ adj - 12BearingsBearings:
REMEMBER:
1. always measure clockwise
2. always measure from the north
3. give as a 3 figured number - 13PolygonsPolygons:
sum of interior angles:
180(n-2)
*n = number of sides - 14—Regular and irregular polygons:
Each interior angle:
180 (n=2)
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n - 15—Polygons:
Exterior angles:
360
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n - 16Linear graphsLinear graphs:
y = mx + c - 17—Gradient and y intercept:
Gradient:
m = triangle y/ triangle x - 18Quadratic graphsQuadratic graphs:
ax squared + bx + c = 0
(know its quadratic as x has a power of 2)
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- Mathematics (Form 3 ) Flashcards on Maths Formulas (Form 3) , created by Gaia Cassar on 04/11/2019.
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