標題:
F.2 mathz(easy calculate)
發問:
1)Calculate the following,correct your answer to 2 sig.fig.a)1.78x2.01b)61/21.42)The figure shows a stamp with dimension 22mmx28mm.a)Find the area of the stamp to the nearest cm^2.b)A sheet of stamps contains 200stamps.Find the area of the sheet of stamps to the nearest cm^2.3)The length of a road is... 顯示更多 1)Calculate the following,correct your answer to 2 sig.fig. a)1.78x2.01 b)61/21.4 2)The figure shows a stamp with dimension 22mmx28mm. a)Find the area of the stamp to the nearest cm^2. b)A sheet of stamps contains 200stamps.Find the area of the sheet of stamps to the nearest cm^2. 3)The length of a road is 28.3km. a)How many sig.fig. is it? b)Find the upper limit and lower limit of the length.
最佳解答:
1)Calculate the following,correct your answer to 2 sig.fig. a)1.78x2.01 =3.5778 =3.6(correct to 2 sig.fig.) b)61/21.4 =2.9(correct to 2 sig.fig.) 2)The figure shows a stamp with dimension 22mmx28mm. a)Find the area of the stamp to the nearest cm^2. the area of the stamp = 22mmx28mm =2.2cm x 2.8cm =6.16cm^2 =6cm^2(correct to the nearest cm^2) b)A sheet of stamps contains 200stamps.Find the area of the sheet of stamps to the nearest cm^2. the area of the sheet of stamps =20(6.16cm^2) =123.2cm^2 =123cm^2(correct to the nearest cm^2) 3)The length of a road is 28.3km. a)How many sig.fig. is it? 3 b)Find the upper limit and lower limit of the length. the maximum absolute error =1/2 * (0.1) =0.05km the upper limit of the length =28.3+0.05 =28.35km the lower limit of the length =28.3-0.05 =28.25km
F.2 mathz(easy calculate)
發問:
1)Calculate the following,correct your answer to 2 sig.fig.a)1.78x2.01b)61/21.42)The figure shows a stamp with dimension 22mmx28mm.a)Find the area of the stamp to the nearest cm^2.b)A sheet of stamps contains 200stamps.Find the area of the sheet of stamps to the nearest cm^2.3)The length of a road is... 顯示更多 1)Calculate the following,correct your answer to 2 sig.fig. a)1.78x2.01 b)61/21.4 2)The figure shows a stamp with dimension 22mmx28mm. a)Find the area of the stamp to the nearest cm^2. b)A sheet of stamps contains 200stamps.Find the area of the sheet of stamps to the nearest cm^2. 3)The length of a road is 28.3km. a)How many sig.fig. is it? b)Find the upper limit and lower limit of the length.
最佳解答:
1)Calculate the following,correct your answer to 2 sig.fig. a)1.78x2.01 =3.5778 =3.6(correct to 2 sig.fig.) b)61/21.4 =2.9(correct to 2 sig.fig.) 2)The figure shows a stamp with dimension 22mmx28mm. a)Find the area of the stamp to the nearest cm^2. the area of the stamp = 22mmx28mm =2.2cm x 2.8cm =6.16cm^2 =6cm^2(correct to the nearest cm^2) b)A sheet of stamps contains 200stamps.Find the area of the sheet of stamps to the nearest cm^2. the area of the sheet of stamps =20(6.16cm^2) =123.2cm^2 =123cm^2(correct to the nearest cm^2) 3)The length of a road is 28.3km. a)How many sig.fig. is it? 3 b)Find the upper limit and lower limit of the length. the maximum absolute error =1/2 * (0.1) =0.05km the upper limit of the length =28.3+0.05 =28.35km the lower limit of the length =28.3-0.05 =28.25km
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