4.OA.2 - 4.OA.3

Front

What is the formula to calculate total earnings based on hourly wage and hours worked?

Back

Total Earnings = Hourly Wage × Hours Worked

Front

How do you estimate the total cost when given a number of items and their price?

Back

Total Cost ≈ Number of Items × Price per Item (using rounding for estimation)

Front

What is the relationship between multiplication and repeated addition?

Back

Multiplication is a shortcut for adding the same number multiple times.

Front

If one person has a certain number of items and another has a multiple of that number, how can you express the second person's total?

Back

If Person A has 'x' items, and Person B has 'n' times as many, then Person B has 'n × x' items.

Front

What equation represents the relationship between two quantities when one is a multiple of the other?

Back

If A is a multiple of B, then A = k × B, where k is a whole number.

Front

How can you express a division problem in terms of multiplication?

Back

If you have an equation like A = B ÷ C, you can express it as B = A × C.

Front

What is the importance of understanding ratios in problem-solving?

Back

Ratios help compare quantities and understand relationships between them.

Front

How do you convert a word problem into a mathematical equation?

Back

Identify keywords, assign variables, and translate the relationships into an equation.

Front

What is the significance of using variables in equations?

Back

Variables represent unknown quantities and allow for generalization in problem-solving.

Front

How do you determine the total number of items when given a ratio?

Back

Use the ratio to set up a proportion and solve for the total.