Estimate the values of the following.
1) 6492x7.02
2) 879.6x4.97
3)6059.5/5.95
4) 835x7.1 /49.2
5) 64.8x6.1 /30.3
6) 649.7x4.12 /19.97
f.2 easy mathz help me plz
2007-11-14 4:32 am
回答 (3)
2007-11-14 4:39 am
✔ 最佳答案
1) 6492x7.02= 6500x7
= 45500
2) 879.6x4.97
= 880x5
= 4400
3)6059.5/5.95
= 6060/6
= 1010
4) 835x7.1 /49.2
= 835x7 / 50
= 5845/50
= 5800/50
= 116
5) 64.8x6.1 /30.3
= 65x6 / 30
= 390/30
= 13
6) 649.7x4.12 /19.97
= 650x4 / 20
= 2600/20
= 130
2007-11-14 4:43 am
這個要看cor. to 多少個sig. fig.
我假設全部都是cor. to 1 s.f.
1) 6492x7.02
~6000x7
~42000
2) 879.6x4.97
~800x5
~4000
3)6059.5/5.95
~6000/6
~1000
4) 835x7.1 /49.2
~800x7/50
~112
5) 64.8x6.1 /30.3
~60x6/30
~12
6) 649.7x4.12 /19.97
~600x4/20
~120
我假設全部都是cor. to 1 s.f.
1) 6492x7.02
~6000x7
~42000
2) 879.6x4.97
~800x5
~4000
3)6059.5/5.95
~6000/6
~1000
4) 835x7.1 /49.2
~800x7/50
~112
5) 64.8x6.1 /30.3
~60x6/30
~12
6) 649.7x4.12 /19.97
~600x4/20
~120
參考: myself
2007-11-14 4:40 am
1)45500
2)4400
3)1010
4)117
5)13
6)130
2)4400
3)1010
4)117
5)13
6)130
收錄日期: 2021-04-13 14:29:12
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