The number n is doubled and then y is added to it. The result is, then divided by 2 and the original number n is subtracted from it. The final result is
n + y
y
42 cubes each of side 1 cm are glued together to form a solid cuboid. If the perimeter of the base of the cuboid is 18 cm, then its height (in cm)
3
4
1
2
A.
3
Since, cubes are 42 having side of 1 cm.
:. Volume of cuboid formed= 42 cm
Now, given perimeter of base= 18
i.e. 2 (l + b)= 18
l + b = 9
Now, we know volume of cuboid = l x b x h
=> 42 = l x b x h
Now, possible values of land bare 7 and 2 respectively because 7 x 2 is the factor of 42 and 7 + 2 = 9 also. 42 = 7 x 2 x h
h = 3cm
triangles will be congruent if B is a right anglE
triangles are congruent only if AB= AC
triangles cannot be congruent
triangles must be congruent
The area of a trapezium-shaped field is 720 m, the distance between the two parallel sides is 20 m and the length of one of the parallel sides is 35 m. The length of the other parallel side is
37m
40m
35m
36m
If the cost price of 10 candles is equal to the selling price of 8 candles, the gain/loss
20%, gain
25%, loss
25%, gain
20%, loss
Under the topic, "Use of exponents to express
small numbers in standard form", the following facts are stated
A. the speed of light is 300000000 m/s.
B. the height of the Mount Everest is 8848m.
C. the diameter of a wire on a computer chip is 0.000003m.
D. the size of a plant cell is 0.00001275m.
The above examples are used to express each stated number in standard form. Use aof such examples
is made in class to grab the attention of students
more interested in Science
helps the teacher to identify the bright students
shows the accuracy aspect of numbers
reflects the inter-disciplinary approach
'Maths lab activities' can be used for
both formative as well as summative assessment
selecting students for National Mathematics
Olympiad
formative assessment
summative assessment
As per the NCF, 2005
narrow aim of teaching Mathematics at school is to develop numeracy-related skill and higher aim is to develop problem-solving skill
narrow aim of teaching Mathematics at school is to teach arithmetic and higher aim is to teach algebra
narrow aim of teaching Mathematics at school is to teach number
narrow aim of teaching Mathematics at school is to teach calculation and higher aim is to teach
measurements
According to Bloom's revised taxonomy, the cognitive objective that can be achieved through the following task
"Prepare a powerpoint presentation on contribution of Indian mathematicians," is
analyzing
creating
remembering
understanding