31.

The term, 'Mathematical tools' refers to

• calculators, rulers, tape measures, protractors, compass, etc

• charts based on formulae and concepts, graph papers, dotted sheets, etc

• all types of materials including language, written symbols, meaningful instructions to establish their purpose

• physical material like geo-board and 3 D models, cubic rods, etc

According to NCF 2005, school Mathematics takes place in a situation where

• children are listeners and the teacher is an active narrator

• children are involved in chorus drill of formulae and pressure of performance in examination

• Mathematics is part of children's life experience

• children are forced to learn all concepts by daily practice

Which of the following terms in mathematics is defined?

• Line

• Point

• Diagonal of a quadrilateral

• Plane

"Two complementary angles are in the ratio 2 : 3. Find these angles." The above problem from NCERT textbook of Class VII refers to

• lower order thinking as it is based on using the information in concrete situation

• higher order thinking as it demands the interpretation of given information, its analysis and use in getting the desired information

• higher order thinking as it demands construction of a figure using given information

• lower order thinking as it is based on recalling information

$\mathrm{If} \frac{\sqrt{1058} \times \sqrt{648}}{\mathrm{x}} = 18, \mathrm{then} \mathrm{the} \mathrm{value} \mathrm{of} \mathrm{x} \mathrm{is}$

• 36

• 46

• 58

• 23