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प्रश्न
Is this magic possible on a 10 × 10 number chart? Go to the Chapter ‘Fun with Numbers’ and check.
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उत्तर
check with a 10 × 10 number chart
Yes, the magic works in a 10 × 10 number chart also.
The cross lines- 1 + 12 + 23+ … + 89+ 100 = 505
and 10 + 19 + 28+ … + 82 + 91 = 505
As there is no middle line, we have to get average sum of both horizontal lines
5 + 15 + 25+ … + 95 and 6 + 16 + 26 + … 96 = 505
Average sum of both vertical lines
41 + 42 + 43 + … + 50 and 51 + 52 + 53 + … + 60 = 505.
Thus, the magic works here as well.
APPEARS IN
संबंधित प्रश्न
This is a story with topsy turvy time.
As the sun sets ______ Sumana wakes up. What a lovely evening! ______. She washes her face fast in 2 hours ______ and runs out. She goes straight to the bird’s nest. She has been watching the eggs for the last few months ______. She was waiting for the baby birds to come out. But before she can blink her eyes, in a week ______ a cat jumps on to the tree. The mother bird cries loudly and Sumana rushes to shoo away the cat. As the cat jumps, it hits the big green mango. Dhum!...
...In two days ______ it is on the ground! Oh, how sad! The mango is still not fully ripe. It needed one more year ______ to become sweet. Suddenly Sumana’s sister calls but - Are you still not hungry? Has your stomach clock gone to sleep? Come and eat hot upma for dinner ______.
Wasn’t that funny? You must have guessed that the coloured words are wrong. Choose the correct word from the box given below and write it next to the wrong word.
| Days | rises | seconds | morning |
| Breakfast | moment | minutes | week |
Look at the birth certificate of bincy.
2/5/2002 shows that Bincy was born on 2 ____, in the year 2002.
Write your date of birth in numbers.
Let us look at the calendar for the year 2020.
- How many weeks are there in July?
- Is it true for all the months?
Let us look at the calendar for the year 2020.
In which month did you come to class III?
Now look at the calendar of 2020. Also look for the present month and draw any similar square in your notebook. Does the magic work for these?
What is the date on second Saturday?
Is there any other day in any month which comes 5 times?
Write down the time for each picture. For some pictures, the time is already written and you must draw the hands on the clock. In others, you have to write the time shown by the clock.
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Kusum gets up early in the morning. |
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She brings water from the well. |
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At six-thirty in the morning. |
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She cleans her house. |
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She goes to school. |
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At eight o'clock. |
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She is studying in school. |
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She comes back from school. |
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1 o'clock in the afternoon. |
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She takes lunch with her brother and grandmother. |
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She plays with her friends. |
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Five-thirty in the evening. |
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She listens to a story from her grandmother before she sleeps. |
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9 o'clock at night. |
| Time of the Day in words | On the clock | What do you do at this time? |
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