Secondary School (English Medium) (5 to 8) Class 5 - CBSE Question Bank Solutions

Take any number. Now multiply it by 2, 3, 4 ............... at every step. Also, add 3 to it at each step. Look at the difference in the answer. Is it the same at every step?

Now try doing it with some other number and also take a different number to add at each step.

Look at the numbers below. Look for the pattern. Can you take it forward?

What if someone gives you to add ten numbers together?

Did you notice some pattern in the answers?

Take the first two odd numbers. Now add them, see what you get. Now, at every step, add the next odd number.|

How far can you go on?

Write a set of clues for a secret number of your own. Then give it to a friend to guess your secret number.

Ask your friend rite — W down your A age. dd 5 to it. Multiply the sum by 2. Subtract 10 from it. Next, divide it by 2. What do you get?

Number Surprises

Look at this pattern of numbers and take it forward.

       1      = 1 × 1

     121    = 11 × 11

   12321  = 111 × 111

1234321 = ?

Now make your own number surprises.

Here are some pictures are drawn on a 1 cm square grid. Try making the same pictures on a 2 cm grid and also on a `1/2` cm grid. One picture is already done.

• The side of the square was made two times bigger. Does its area also become two times bigger?

This is a part of the parade-route Map 3.

• Can you see which part of the route map it is?

This is a part of the parade-route Map 3.

• Now try to make it bigger in this 2 cm grid. Remember that the shape of the map should not change.

If the parade route map is smaller, and the distance between India Gate and Vijay Chowk becomes 2 cm, what would be its scale?

• 1 cm on map = 1 km on ground
• `1/2` cm on map = 1 km on ground
• 2 cm on map = 1 km on ground

Look at the map and tell:

• Which state is surrounded by four other states?

Look at the map and tell:

• Which state has the largest area? If its name is not on the map, find it from your teacher or parents.
  Explain how you got your answer.

Look at the map and tell:

• Which state is about 8 times bigger in area than Sikkim?

Look at the map and tell:

• About how many times of Punjab is the area of Rajasthan?

Have you seen frogs? Where? How many different types of frogs have you seen? Are all the frogs of the same length? Here are two interesting examples.

Guess the lengths to draw these things. Ask your friend to draw the same. After you make the drawing use a scale to measure the length. Whose drawing showed a better guess?