1)Which of the following measurement is the most accurate?
a) 0.0068km
b)6.80m
c)68dm (1dm=10cm)
d)680cm
e)6800mm
2)The length of a line is 23 cm correct to the nearest cm.Which of the following cannot be the exact length of the line?
a)22.48cm
b)22.68cm
c)23.01cm
d)23.22cm
e)23.095cm
F.2 math (MC question)plz help
2007-11-23 10:45 pm
回答 (4)
2007-11-23 11:16 pm
✔ 最佳答案
1.)eaccurate 指最準確，而e是指誤差在+/-0.5mm。
2.)a
四捨五入後，a=22cm
2007-11-23 11:41 pm
1) a
more presice
2) b
correct to the nearest cm ==> 23 cm +/- 0.5 cm
==> 22.5 cm - 23.5 cm
more presice
2) b
correct to the nearest cm ==> 23 cm +/- 0.5 cm
==> 22.5 cm - 23.5 cm
參考: Me
2007-11-23 10:56 pm
1.A
2.B
my math is not very good,but i hope i can help u
2.B
my math is not very good,but i hope i can help u
2007-11-23 10:52 pm
1) A
2) A
2007-11-23 14:56:11 補充：
sorry the first one should be BFor the second one, explanation is as follow:2)a)22.48cm = 22b)22.68cm = 23c)23.01cm = 23d)23.22cm = 23e)23.095cm = 23
2) A
2007-11-23 14:56:11 補充：
sorry the first one should be BFor the second one, explanation is as follow:2)a)22.48cm = 22b)22.68cm = 23c)23.01cm = 23d)23.22cm = 23e)23.095cm = 23
收錄日期: 2021-04-13 14:33:29
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