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# 7th Grade Math Formula Chart

The Formula chart gives easy understanding and explanation of concept for referral of students.7th grade math formula chart is created based on the revised edition of the latest syllabus and curriculum guidelines.

Formula chart:
A list of formula chart are given below for student reference.

Speed and Time:

Speed = $\frac{distance\ travelled}{Time\ taken}$

Number of revolution = $\frac{Distance\ travelled}{Circumference\ of\ the\ wheel}$

Percentage and its Application:

Loss = C.P = S.P

The profit or loss percentage can be calculated as $\frac{profit/loss}{cost\ price}$*100

S.P = $\frac{100+profit}{100}$*C.P

S.P = $\frac{100-loss}{100}$*C.P

C.P = $\frac{100}{100+profit}$*S.P

C.P = $\frac{100}{100-profit}$*S.P

Interest:

When rate of discount is given  Discount = $\frac{MP*Rate\ of\ discount}{100}$

Simple Interest = $\frac{PTR}{100}$

where P = Principal , T = Time in years R = Rate of interest per annum

Principal = $\frac{100*S.I}{R*T}$

Rate = $\frac{100*S.I}{P*T}$

Time = $\frac{100*S.I}{P*R}$

Geometric Formula:

Diameter of a circle d = 2r  , where r is radius
Circumference of  a circle C = 2πr  , when radius is given
Relation between circumference and diameter is C = πd

Area:

 Solid Figure Area Triangle : = $\frac{1}{2}$ bh b = base,h = height Rectangle: = l* w Perimeter of Rectangle : 2(l+w) l= length,w = width Square: = s2 Perimeter of square : 4s S = length of the side Circle: = πr2 where r is the radius

Volume:

Cube: V = S3

Rectangular Prism: V = l*w*h

Cylinder V = πr2h

Time:

1 year  : 52 weeks
1 week : 7days
1 day:   24 hours
1Hour:    60 minutes
1 minute: 60 seconds

Capacity and volume:

Metric:
1 liter = 1000 milliliters
Customary:
1 gallon  = 4 quarts
1 gallon = 128 fluid ounces
1 quart = 2pints
1 pint = 2 cups
1 cup = 8 fluid ounces