Unit 1 Addition Subtraction Perimeter VERSION 2

Front

What is the formula to calculate the perimeter of a rectangle?

Back

Perimeter = 2 × (length + width)

Front

What is the perimeter of a rectangle that is 8 inches by 10 inches?

Back

36 inches

Front

How do you estimate the difference of two numbers to the nearest hundred?

Back

Round each number to the nearest hundred and then subtract.

Front

Estimate the difference to the nearest hundred: 946 - 459 = ?

Back

400

Front

If a family found a total of 11,362 pine cones and 9,482 on Saturday, how do you find the number found on Sunday?

Back

Subtract the number found on Saturday from the total: 11,362 - 9,482 = 1,880.

Front

What is the total amount in Rachel's bank account after depositing $85 and making purchases?

Back

$445.54

Front

How do you estimate the sum of multiple numbers to the nearest hundred?

Back

Round each number to the nearest hundred and then add.

Front

Estimate the sum to the nearest hundred: 63 + 2,145 + 764 = ?

Back

3,000

Front

What is subtraction?

Back

Subtraction is the operation of finding the difference between two numbers.

Front

What is addition?

Back

Addition is the operation of combining two or more numbers to get a total.