Read each item carefully. Encircle the letter of the best answer.
1. What is the basic unit of length in the metric system?
C. hectometer
A. meter
B. kilometer
D. dekameter
2. It refers to the degree of hotness or coldness of the body.
A. area
C. volume
B. mass
D. temperature
3. What is the basic unit of mass/weight under MKS system?
A. gram
C. hectogram
B. kilogram
D. dekagram
4. How many days are there in 3 weeks?
A. 20 days
C. 22 days
B. 21 days
D. 24 days​