27,210 views
20 votes
20 votes
Which is the estimate of 398 x 1.9?

User Damodharan R
by
2.4k points

2 Answers

15 votes
15 votes

Answer:

800

Explanation:

When we say estimate, we must estimate the 2 numbers to their closest answer:

398- 400 when rounded to the nearest 100

1.9- 2 when rounded to the nearest whole number

So we get the estimate equation as: 400×2= 800

User Tiago Mendes
by
2.9k points
7 votes
7 votes

Solution:

We know that:


  • \tex\text{398 can be rounded to 400, as 398 is close to 400.}

  • \tex\text{1.9 can be rounded to 2, as 1.9 is close to 2.}

This means that:


  • 398 * 1.9
    400 * 2

Simplifying "400 x 2"


  • 400 * 2
    = 800

Thus, the estimate of 398 x 1.9 is about 800.

User Cmptrgeekken
by
3.0k points
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