Solving proportions

The topic  appears under the 7th Grade Math Mission. This exercise solves proportions with small numbers

Types of Problems
There is one type of problem in this exercise:


 * 1) Solve the proportion: This problem presents a proportion with a single unknown. The student is asked to solve the problem and type the answer in the space provided.Proport1.png

Strategies
The multiplication and division properties of equality can help to do this problem, as does the concept of cross multiplication.
 * 1) A proportion is a mathematical statement that has two ratios set equal to each other.
 * 2) Cross-multiplication is the rule that a/b=c/d is equivalent to ad=bc.
 * 3) Some problems can be seen as having a convenient multiplier on either the numerators or denominators, which can be extended to the other side.
 * 4) Some problems will involve fractions, but the fractions do not need to be reduced. Speed can be increased by not reducing fractions unless it is truly obvious.