Sunita and Rehana want to make dresses for their dolls. Sunita has 3/4 m of cloth, and she gave 1/3 of it to Rehana. How much did Rehana
have?
A floor is 4.5 m long and 3.6 m wide. A 6 cm square tile costs rs 23.25. What will be the cost to cover the floor with these tiles?
Measurement made in science lab must be as accurate as possible.
Ravi measured the length of an iron rod and said it was 19.34 cm
long; Kamal said 19.25 cm; and Tabish said 19.27 cm. The correct
length was 19.33 cm. How much of error was made by each of the
boys?
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
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?
Heena’s father paid an electric bill of rs 385.70 out of a 500 rupee note. How much change should he have received?
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