Grade 7 Math

Front

What is the process to subtract mixed numbers?

Back

To subtract mixed numbers, convert them to improper fractions, find a common denominator if necessary, subtract the fractions, and then convert back to a mixed number if needed.

Front

How do you find the age of a person based on relationships?

Back

To find the age based on relationships, set up equations based on the given relationships and solve for the unknown age.

Front

What is probability?

Back

Probability is the measure of the likelihood that an event will occur, calculated as the number of favorable outcomes divided by the total number of possible outcomes.

Front

How do you calculate the total number of outcomes in a scenario with multiple choices?

Back

Multiply the number of choices for each decision. For example, if there are 5 doors and 3 boxes behind each, the total outcomes are 5 x 3 = 15.

Front

What is a variable in algebra?

Back

A variable is a symbol, often a letter, that represents an unknown value in mathematical expressions or equations.

Front

How do you express a fraction of a number?

Back

To express a fraction of a number, multiply the number by the fraction. For example, 1/4 of 20 is 20 x 1/4 = 5.

Front

What is an improper fraction?

Back

An improper fraction is a fraction where the numerator is greater than or equal to the denominator, such as 5/4.

Front

How do you convert a mixed number to an improper fraction?

Back

To convert a mixed number to an improper fraction, multiply the whole number by the denominator, add the numerator, and place that over the original denominator.

Front

What is the formula for finding the probability of an event?

Back

The formula for probability is P(E) = Number of favorable outcomes / Total number of outcomes.

Front

What does it mean for two quantities to be proportional?

Back

Two quantities are proportional if they maintain a constant ratio or relationship to each other.