Explain how you would use a number line to round 148 to the nearest ten.
Let's try this picture --
_______._________._________._________.
. . . 130 . . . 140 . . . 150 . . . 160
Where would you place 148 on this number line?
150
WRITING in MATH......... Explain how you would use a number line to round 148 to nearst tens
To use a number line to round 148 to the nearest ten, follow these steps:
1. Draw a straight line horizontally on a piece of paper or in your mind.
2. Mark the number line with increments of ten. Start with zero and label the subsequent marks as 10, 20, 30, and so on.
3. Find the place of the number you want to round, in this case, 148, on the number line.
- Locate the number 148 on the number line.
- It will fall between the marks 140 and 150.
- Place a dot or make a mark above the position of 148 on the number line.
4. Determine which ten the number is closer to.
- Since 148 falls between 140 and 150, we need to compare the distances to each ten.
- Measure the distance from 148 to 140, and from 148 to 150.
- You will find that the distance from 148 to 140 is 8, and the distance from 148 to 150 is also 8.
5. Use the rule of rounding: If the distance to the tens is an equal distance, round up to the higher ten.
- Since the distance to both tens is 8 and equal, we will round up to the higher ten, which is 150.
6. Therefore, rounding 148 to the nearest ten using a number line would give us 150 as the result.