Maharashtra State Board Class 6 Maths Solutions Chapter 3 Integers Practice Set 4
Classify the following numbers as positive numbers and negative numbers.
-5, +4, -2, 7, +26, -49, -37, 19, -25, +8, 5, -4, -12, 27
|Positive Numbers||+4, 7, +26, 19, +8, 5, 27|
|Negative Numbers||-5, -2, -49, -37, -25, -4, -12|
Given below are the temperatures in some cities. Write them using the proper signs.
|Temperature||7 °C below 0°||12 °C below 0°||22 °C above 0°||31 °C above 0°|
|Temperature with proper sign||-7 °C||-12 °C||+22 °C||+31 °C|
Write the numbers in the following examples using the proper signs.
- A submarine is at a depth of 512 meters below sea level.
- The height of Mt Everest, the highest peak in the Himalayas, is 8848 meters.
- A kite is flying at a distance of 120 meters from the ground.
- The tunnel is at a depth of 2 meters under the ground.
- A submarine is at a depth of -512 meters from sea level.
- The height of Mt Everest, the highest peak in the Himalayas is +8848 meters.
- A kite is flying at a distance of +120 meters from the ground.
- The tunnel is at a depth of -2 meters from the ground.
Maharashtra Board Class 6 Maths Chapter 3 Integers Practice Set 4 Intext Questions and Activities
Take warm water in one beaker, some crushed ice in another and a mixture of salt and crushed ice in a third beaker. Ask your teacher for help in measuring the temperature of the substance in each of the beakers using a thermometer. Note the temperatures. (Textbook pg. no. 13)
( Students should attempt this activity on their own)
Look at the picture of the kulfi man. Why do you think he keeps the kulfi moulds in a mixture of salt and ice? (Textbook pg. no. 14)
Kulfi man keeps the kulfi moulds in a mixture of salt and ice because such a mixture helps in keeping the kulfi cool for a longer period of time. The kulfi kept in the said mixture relatively takes more time to melt. This mixture is Considered ideal as it has the temperature of -4°C as against the temperature of ice i.e. 0°C.
My class, i.e. Std. VI, is a part of my school. My school is in my town. My town is a part of a taluka. In the same way, the taluka is a part of a district, and the district is a part of Maharashtra State. In the same way, what can you say about these groups of numbers? Textbook pg. no. 15)
By observing the above given groups of numbers, we can infer that natural numbers are a part of whole numbers. In turn, whole numbers are a part of integers.