The normal body temperature is 98.6°F. When Savitri was ill her temperature rose to 103.1°F. How many degrees above normal was that?

of a number equalsWhat is the number?

Heena’s father paid an electric bill of 385.70 out of a 500 rupee note. How much change should he have received?

Meteorology: One measure of average global temperature shows how each year varies from a base measure. The table shows results for several years.

See the table and answer the following:

a) Order the five years from coldest to warmest.

b) In 1946, the average temperature varied by –0.030C from the base measure. Between which two years should 1946 fall when the years are ordered from coldest to warmest?

In her science class, Jyoti learned that the atomic weight of Helium is 4.0030; of Hydrogen is 1.0080; and of Oxygen is 16.0000. Find the difference between the atomic weights of:

a) Oxygen and Hydrogen

b) Oxygen and Helium

c) Helium and Hydrogen