5th Grade Math: Unit 2

Front

What is rounding?

Back

Rounding is the process of adjusting a number to make it simpler and easier to work with, usually to the nearest whole number or specified decimal place.

Front

How do you round a number to the nearest whole number?

Back

To round a number to the nearest whole number, look at the digit in the tenths place. If it is 5 or greater, round up. If it is less than 5, round down.

Front

Round 97.921 to the nearest whole number.

Back

98

Front

What is the perimeter of a shape?

Back

The perimeter is the total distance around the outside of a shape.

Front

If Felipe walks around a yard with a perimeter of 129.77 ft twice, how do you estimate the total distance he walks?

Back

To estimate, you can round the perimeter to the nearest whole number (130 ft) and then multiply by 2, giving an estimate of 260 ft.

Front

Round 49.014 to the nearest whole number.

Back

49

Front

Round 71.19 to the nearest whole number.

Back

71

Front

Round 132.099 to the nearest whole number.

Back

132

Front

What is estimation in math?

Back

Estimation is a method of finding an approximate value that is close enough to the right answer, often used when exact calculations are not necessary.

Front

Why is rounding important in everyday life?

Back

Rounding helps simplify numbers, making them easier to understand and work with in everyday situations, such as budgeting or measuring.