enVision Math, 5th Grade Topic 5 Practice Test

Front

What is the formula to calculate the number of weeks needed to save for an item?

Back

To find the number of weeks needed to save for an item, divide the total cost of the item by the amount saved each week: Weeks = Total Cost / Amount Saved per Week.

Front

How do you determine the number of acres needed to plant a certain number of trees?

Back

To find the number of acres needed, divide the total number of trees by the number of trees that can be planted per acre: Acres = Total Trees / Trees per Acre.

Front

What is the process to find out how many boxes are needed for a certain number of items?

Back

To determine the number of boxes needed, divide the total number of items by the number of items per box: Boxes = Total Items / Items per Box.

Front

What are compatible numbers and how are they used in estimation?

Back

Compatible numbers are numbers that are easy to compute with mentally. They are used in estimation to simplify calculations, making it easier to find approximate answers.

Front

How do you calculate the least number of cabins needed for a group of campers?

Back

To find the least number of cabins needed, divide the total number of campers by the number of campers per cabin and round up to the nearest whole number: Cabins = Ceiling(Total Campers / Campers per Cabin).

Front

What is the significance of rounding numbers in estimation?

Back

Rounding numbers in estimation simplifies calculations and helps to quickly find approximate values, making it easier to solve problems without exact calculations.

Front

How can you express a division problem as a multiplication problem?

Back

A division problem can be expressed as a multiplication problem by finding the reciprocal of the divisor. For example, instead of 12 ÷ 3, you can express it as 12 x (1/3).

Front

What is the relationship between multiplication and division?

Back

Multiplication and division are inverse operations. If a × b = c, then c ÷ b = a and c ÷ a = b.

Front

How do you solve a word problem involving saving money over time?

Back

Identify the total amount needed, the amount saved per time period, and divide the total amount by the amount saved to find the time required.

Front

What is the importance of understanding units in word problems?

Back

Understanding units is crucial in word problems as it helps to ensure that calculations are performed correctly and that the final answer is in the appropriate unit.