7th Grade Math Help
Tutorvista is designed to provide quality help for students with math. We provide 7th grade math help and our online tutors give detail explanation of each and every concept coming under this grade. Following is a representative list of topics covered in our 7th grade Math help - however all programs will be customized for the individual student. We are listed some topics covered under 7 Grade Math.
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Number and Operations
- Understanding of rational numbers with respect to square roots of perfect square, proportional reasoning, percents involving discounts, tax and rates.
- Identify, compare and order decimals, fractions and integers.
- Scientific notation, radicals, absolute value, irrational or real numbers.
- Add, subtract, multiply and divide fractions and convert between fractions, decimals and percents solves problems involving the addition or subtraction of integers, raising numbers to whole number powers, and determining square roots of perfect square numbers and non perfect square numbers.
- Understanding of properties of number and field properties as apply to subsets of the real numbers.
Geometry and Measurement
- Properties of angles (adjacent angle, vertical, straight or angle formed by intersection of two non - parallel lines).
- Hypothesize, sketch, identify, sort, classify, construct, measure, and apply a variety of geometric shapes and figures and problems.
- Analyze and identify shapes that have been rotated, reflected, translated and describe those that are congruent.
- Understanding of the area of circles or the area or perimeter of figures (quadrilaterals, triangles, or parts of circles), and the surface area of rectangular prisms, or volume of rectangular prisms, triangular prisms, or cylinders.
Functions and Algebra
- Extend, analyze and justify the explanations for patterns and their rules and a more complex level using words and symbols.
- Solving problems involving the relationship between slope and rate of change or describes how change in the value of one variable relates to change in the value of a second variable.
- Be able to write algebraic expressions and write statements to understand simple formulas and simplify algebraic equations with the four operations.
Data, Statistics, and Probability
- Analyze the data to formulate or justify conclusions, to make predictions (circle graphs, linear relationship).
- Simple or composite experiments, independent events, dependent events.
- Representations of data
- Mean, median, mode, and range.
- Predicts and determines event in which the sample space may or may not contain equally likely outcomes.
7th grade math problems online are an excellent solution for anyone who needs help or is looking for ways to sharpen their solving skills. Unlike classroom teaching or traditional tutorials, online math helpers give you the choice of studying when you want. This is a huge advantage, especially if it is exam time and you need help quickly and instantly. Online study for 7th grade math problems helps and exam preparation are other services that you can get from online math helpers.
Solved Examples
Solution:
Given, 12 x 45 $\div$(12 - 7) + 4
12 x 45 $\div$(12 - 7) + 4 = 12 x 45 $\div$5 + 4
= 12 x 45 x $\frac{1}{5}$ + 4
= 12 x 9 + 4
= 108 + 4
= 112
=> 12 x 45 $\div$(12 - 7) + 4 = 112
$\frac{x}{35} = \frac{3}{7}$
Solution:
Given, $\frac{x}{35} = \frac{3}{7}$
$\frac{x}{35} = \frac{3}{7}$
=> 7x = 3 * 35
=> x = $\frac{3 * 35}{7}$
=> x = 15
Check:
LHS = $\frac{x}{35}$
= $\frac{15}{35}$
= $\frac{3 * 5}{5 * 7}$
= $\frac{3}{7}$
= RHS
Solution:
Given
Area of the circular table (A) = 154 square feet
Let 'r' be the radius and 'd' be the diameter of the circle
Use the formula,
A = ∏ r2
=> 154 = $\frac{22}{7}$ * r2
=> 154 x $\frac{7}{22}$ = r2
=> 7 x 7 = r2
=> r = 7
and d = 2 r = 2 x 7 = 14
=> Radius of circular table = 7 feet
and diameter = 14 feet.
Practice Problem 1: Jiany needs to type a artical that will be 20 pages long. Each page contains about 100 words. If Jiany can type 50 words per minute, how many minutes will it take him to complete the artical?
Answer: 40 mins
Practice Problem 2: What would be the compound interest accrued on an amount of 7400 dollarss at the rate of 13% at the end of 2 years?
Answer: C.I. = 2132.87 dollars