Rounding Word Problems

Front

What is rounding in mathematics?

Back

Rounding is the process of adjusting the digits of a number to make it simpler and easier to work with, typically by increasing or decreasing it to the nearest specified place value.

Front

How do you round a number to the nearest hundred?

Back

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

Front

What is the result of rounding 293 to the nearest hundred?

Back

300

Front

How do you round a number to the nearest ten?

Back

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

Front

What is the result of rounding 98 to the nearest ten?

Back

100

Front

What is the importance of estimating in word problems?

Back

Estimating helps to quickly assess the reasonableness of an answer and can simplify calculations in word problems.

Front

If Mia added 86 chocolate chips, Adriana added 44 m&m's, and Stacy ate 23 peanut butter cups, how do you estimate the total ingredients?

Back

Round 86 to 90, round 44 to 40, and since Stacy ate 23, consider it as 0. The estimated total is 90 + 40 + 0 = 130.

Front

What is the estimated total of 86, 44, and 0?

Back

130

Front

How do you estimate the number of gummy bears left after eating some?

Back

Round the initial number of gummy bears and the number eaten to the nearest ten, then subtract the rounded values.

Front

If you have 58 gummy bears and eat 20, how do you estimate how many are left?

Back

Round 58 to 60 and 20 to 20. Then, estimate 60 - 20 = 40 gummy bears left.