math problem?
回答 (4)
2020-09-11 3:56 pm
3581 × 863
≈ 4000 × 900
= 3600000
≈ 4000 × 900
= 3600000
2020-09-11 3:35 pm
Says round each number so that it has only 1 nonzero digit:
Then 3851 -> 4000
And 863 -> 900
So 4,000 x 900 = 3,600,000
You can do it like this: 40 x 9 = 360 then add back the four zeroes removed.
Then 3851 -> 4000
And 863 -> 900
So 4,000 x 900 = 3,600,000
You can do it like this: 40 x 9 = 360 then add back the four zeroes removed.
2020-09-12 12:52 am
Estimate 3851 × 863 by first rounding each number
so that it has only 1 nonzero digit.
3851 × 863 ≈ 4000 × 900 = 3,600,000
so that it has only 1 nonzero digit.
3851 × 863 ≈ 4000 × 900 = 3,600,000
2020-09-11 3:39 pm
Sorry ... I can manually compute the true answer on a piece of paper faster than I can comprehend what this "only 1 non-zero digit" instruction expects you to do and yet EASILY estimate. EDIT - I blame my bifocals for not reading the problem correctly (!)
收錄日期: 2021-04-30 18:02:50
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20200911073124AAYmv9t