Question

How do you use the halfway point on the number line to round to the nearest ten grams?

a) Round down if the halfway point is closer to the lower ten grams.
b) Round up if the halfway point is closer to the lower ten grams.
c) Always round down to the nearest ten grams.
d) Always round up to the nearest ten grams.

Answer 1

To round to the nearest ten grams using the halfway point on the number line, first identify the halfway point between two consecutive ten grams. Then compare the number you want to round with the halfway point and round accordingly.

Step-by-step explanation:

To round to the nearest ten grams using the halfway point on the number line, you can follow these steps:

1. Identify the halfway point between two consecutive ten grams. For example, the halfway point between 30 g and 40 g is 35 g.
2. Compare the number you want to round with the halfway point. If the number is closer to the lower ten grams, round down. If it is closer to the higher ten grams, round up.
3. Round the number to the nearest ten grams based on the comparison in step 2.

In this specific example, the number is 35.5 g, which is closer to the higher ten grams (40 g) than the lower ten grams (30 g). Therefore, the number would be rounded up to 40 g.