Rounding Numbers and Concepts

The video tutorial explains how to round the number 25.2 to the nearest whole number using two methods: place value markers and a number line. It begins with an introduction to the rounding problem, followed by a detailed explanation of place value and rounding rules. The tutorial then demonstrates the rounding process step-by-step, showing that 25.2 rounds to 25. Finally, it introduces the number line method to visually illustrate why 25.2 is closer to 25 than 26.

What is the first step in rounding 25.2 to the nearest one?

• Identify the digit in the tenths place.

• Use a calculator to find the nearest whole number.

• Get out place value markers.

• Estimate the number visually.

When rounding a number, what should you do if the digit to the right of the target digit is 5 or more?

• Decrease the target digit by one.

• Keep the target digit the same.

• Ignore the digit to the right.

• Increase the target digit by one.

If a number ends in 4, what should you do when rounding to the nearest one?

• Round up to the next whole number.

• Round down to the previous whole number.

• Round to the nearest tenth.

• Keep the number the same.

What happens to the number 25.2 when rounded to the nearest one?

• It rounds to 24.

• It rounds down to 25.

• It stays the same at 25.2.

• It rounds up to 26.

Why does 25.2 round to 25 instead of 26?

• Because 25.2 is closer to 25 on the number line.

• Because 25.2 is exactly halfway between 25 and 26.

• Because 25.2 is a smaller number than 26.

• Because 25.2 is a larger number than 25.

What is the purpose of using a number line in rounding?

• To calculate the average of two numbers.

• To identify the largest number.

• To visually compare distances to whole numbers.

• To find the exact decimal value.

Which of the following numbers would round to 26 when rounded to the nearest one?

• 25.4

• 25.5

• 25.2

• 25.0