Math Topic 4 Review

Front

What is a compatible number?

Back

A compatible number is a number that is easy to work with when estimating calculations, often rounded to the nearest ten or hundred.

Front

How do you estimate the product of two numbers?

Back

To estimate the product, round each number to a compatible number and then multiply the rounded numbers.

Front

What is the area of a rectangle?

Back

The area of a rectangle is calculated by multiplying its length by its width (Area = Length x Width).

Front

How do you find the difference between two areas?

Back

To find the difference between two areas, subtract the smaller area from the larger area.

Front

What is a factor in multiplication?

Back

A factor is a number that is multiplied by another number to get a product.

Front

If the product of two factors is 2,000 and one factor is 50, how do you find the other factor?

Back

Divide the product by the known factor: 2000 ÷ 50 = 40.

Front

What is the total number of items if you have multiple groups of the same size?

Back

Multiply the number of groups by the number of items in each group (Total = Number of Groups x Items per Group).

Front

How do you calculate the total number of plants on shelves?

Back

Multiply the number of shelves by the number of plants each shelf holds.

Front

What is estimation in math?

Back

Estimation is finding a number that is close enough to the right answer, often used for quick calculations.

Front

What is the formula for finding the area of a rectangle?

Back

Area = Length x Width.