Chinese New Year Holiday HW
Authored by LEE Tung
Mathematics
2nd Grade
Used 1+ times
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24 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The lifetime of a battery is measured as 8.5 h, correct to the nearest 0.5 h. Which of the following CANNOT be the actual lifetime of the battery?
8.2 h
8.27 h
8.51 h
8.69 h
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The length of a table is measured as 500 cm, correct to 2 significant figures. What is the percentage error of the measured length?
0.1%
0.2%
0.5%
1%
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The length of a string is measured as 2.5 m and its relative error is 0.04. Find the maximum absolute error of the measurement.
0.05 m
0.1 m
0.2 m
0.5 m
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A = 12, B = 3
A = 4, B = 8
A = -4, B = 8
A = -4, B = 6
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
81 – 36a2
36a2 – 81
18 – 12a2
12a2 – 18
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
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