Rounding, percent of increase and decrease and taxes practice

Front

What is rounding?

Back

Rounding is the process of adjusting the digits of a number to make it simpler and easier to work with, while keeping its value close to what it was. Numbers are rounded to a specific place value, such as the nearest whole number or the nearest tenth.

Front

When rounding a number, what do you do if the digit in the place you are rounding to is 5 or more?

Back

If the digit in the place you are rounding to is 5 or more, you increase the digit in that place by 1.

Front

What is the nearest tenth of 5.5694?

Back

5.6

Front

How do you calculate percent decrease?

Back

Percent decrease is calculated by taking the difference between the original number and the new number, dividing that difference by the original number, and then multiplying by 100.

Front

If Lilly had 40 peaches and now has 28, what is the percent decrease?

Back

30%.

Front

What is the nearest tenth of 6.98?

Back

7.

Front

How should you round $18.90843 for dealing with money?

Back

$18.91.

Front

What is the rule for rounding down when the digit is less than 5?

Back

If the digit in the place you are rounding to is less than 5, you keep the digit the same and change all digits to the right of it to zero or drop them.

Front

What is the purpose of rounding numbers in real-life situations?

Back

Rounding numbers helps simplify calculations, makes it easier to understand and communicate quantities, and is often necessary for financial transactions.

Front

What is a percent of increase?

Back

Percent of increase is calculated by taking the difference between the new number and the original number, dividing that difference by the original number, and then multiplying by 100.