Advertisements
Advertisements
Question
Chandu’s father is called the ‘young old man’ in his village. At 70 years of age, he is fully fit. Do you know his secret? He goes for a walk around the field every morning. Everyday he takes four rounds of Chandu’s field.
What is the total distance he covers?
4 × ______ = ______ m = ______ km
Advertisements
Solution
The boundary of the field = 150 m + 100 m + 150 m + 100 m = 500 m
The distance covered by young old man = 4 × 500 m = 2000 m = 2 km
APPEARS IN
RELATED QUESTIONS
Here are pictures of some more fields. Find out which one has the longest boundary?
Boundary = ______ metre
Boundary = ______ metre
Boundary = ______ metre
Boundary = ______ metre
How much lace will be used in 3 such table cloths?
How much lace will be left in the roll?
- How many different shapes can you make by joining two squares? Draw them on the squared sheet given below. How long is the boundary of each shape?
- Try this activity with three squares also.
- Find the length of the boundary of square D.
- 8 squares of side 1 cm are cut out of the square D. Now it looks like shape E. What is the length of the boundary of shape E?
- The boundary of this
is ______ + ______ + ______ + ______
Can we also say that the boundary is 4 × 1 cm?
Look at the table in your classroom. Guess how many Math-Magic books you can place on it.
(Remember-The books should not overlap. Do not leave gaps between the books)
- Write your guess here.
- Now check if your guess was right. How many books could you place?
- What is the difference between your guess and the actual number of books?
Now look for another table.
- Is this table bigger than the last table? Yes/No
- Make a guess how many Math-Magic books can be kept on this table.
- Check if your guess was correct.
How many Math-Magic books could you keep? - The difference between the sizes of the two tables is ______ books.
- How many Math-Magic books can be covered with one sheet of newspaper?
- Try covering your Math-Magic book with half a sheet of newspaper.
- Can you cover your book with a smaller sheet?
- Find the smallest sheet which can cover your book. Check if your friend used a smaller sheet than you.
- How many small squares of size 1 cm are there in this big green square?
- Can you think of a faster way to know the total number of small squares without counting each.
Look at the picture. Can you divide it into 4 equal pieces? Each piece should have the same number of squares.
