13. Which of the following affects the accuracy of measurements?
A. The unit of measure
B. The part of the body to be used in measurement
C. The skill of the person doing the measurement
D. The length of the instrument used in measuring
14. What is the appropriate unit of measure for the mass of a steel cabinet?
A zeptogram B. milligram
C. kilogram
D. exa-gram
15. A school bus left a house and travelled at an average speed of 50 kph. How many
minutes will it take for the bus to reach the school which is 8 km away from the house?
A. 0.12 h
B. 0.16 h
C. 6.22 h
D. 6.25 h
16. A baby weighs 3.35 kilograms at birth. Suppose the baby's weight constantly increases
every two months by 1.2 kilograms, what is his weight, in the same unit, on the 5th month?
A. 5.33
B. 5.35
C. 6.33
D. 6.35
17.A car left the house and travelled at an average speed of 60 kph. How many minutes
will it take for the car to reach the school which is 8 km away from the house?
A. 7.8 minutes B. 6.7 minutes
C. 8.7 minutes
D. 9.8 minutes
18. Your mother is very fond of collecting rare philodendron (an ornamental and indoor
plant). If she has a garden which measures 100 m2 (10 m by 10 m) and each philodendron will
occupy an estimated area of 0.6 by 0.6 m of the garden, what is the maximum number of
philodendron plants that will occupy the whole area?
A. 324 plants
B. 526 plants C. 227 plants
D. 436 plants​