NC Check 1 Review

Front

What is a factor?

Back

A factor is a number that divides another number without leaving a remainder. For example, the factors of 15 are 1, 3, 5, and 15.

Front

What is a multiple?

Back

A multiple is the result of multiplying a number by an integer. For example, multiples of 3 include 3, 6, 9, 12, 15, etc.

Front

How do you estimate the sum of numbers?

Back

To estimate the sum, round each number to the nearest ten or hundred and then add those 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. For example, if a rectangle is 4 units long and 5 units wide, its area is 20 square units.

Front

What does it mean to have more than a certain number?

Back

Having more than a certain number means that the quantity is greater than that number. For example, having more than 6 candy bars means having 7 or more.

Front

How do you find all the factors of a number?

Back

To find all the factors of a number, list all the pairs of numbers that multiply together to equal that number.

Front

What is an estimate?

Back

An estimate is a rough calculation or judgment of a number, often used when exact numbers are not necessary.

Front

What is the difference between an exact number and an estimate?

Back

An exact number is precise and accurate, while an estimate is an approximation that may not be exact.

Front

How do you calculate the area of a shape?

Back

To calculate the area, use the appropriate formula for the shape. For rectangles, multiply length by width; for triangles, use 1/2 base times height.

Front

What is a number line?

Back

A number line is a straight line with numbers placed at equal intervals along its length, used to represent numbers visually.