English

What is Dinesh’s height in metres? _____ m _____ cm.

Advertisements
Advertisements

Question

What is Dinesh’s height in metres? _____ m _____ cm.

Fill in the Blanks
Advertisements

Solution

  • it is given that
    = 2 m - 45 m
  • we can write it as
    = 200 cm - 45 cm
  • on further calculation
    = 155 cm
    = 1 m 55 cm.
shaalaa.com
  Is there an error in this question or solution?
Chapter 10: Tenths and Hundredths - Tenths and Hundredths [Page 142]

APPEARS IN

NCERT Math - Magic [English] Class 5
Chapter 10 Tenths and Hundredths
Tenths and Hundredths | Q B) | Page 142

RELATED QUESTIONS

When the planet Jupiter is at a distance of 824.7 million kilometres from the Earth, its angular diameter is measured to be 35.72″ of arc. Calculate the diameter of Jupiter


Just as precise measurements are necessary in science, it is equally important to be able to make rough estimates of quantities using rudimentary ideas and common observations. Think of ways by which you can estimate the following (where an estimate is difficult to obtain, try to get an upper bound on the quantity):-

the number of air molecules in your classroom.


A hand span is a reliable measure of length.


Complete the analogy.

Height of a person: cm :: Length of your sharpened pencil lead:______?


Rulers, measuring tapes and metre scales are used to measure ______


Which line is longer? C or D? Measure each line. How good is your guess?


Difference in size
Do this for yourself and find the difference.


How close was your earlier guess? Discuss.


You can play this game on the ground. Make two squares of one square meter each. Divide your class into two teams. Ready to play!

  • How many of you can sit in one square meter?

Chumki, Jhumri, and Imran need wire to make a fence.

  • How much wire in all will the three need?

In which SI unit, you can measure your height?


Match the following:

  Prefix   Symbol
a. Centi i. k
b. Nano ii. c
c. Mili iii. n
d. Kilo iv. m

Length is ______.


What unit will you use to measure the length of our classroom?


In an experiment to estimate the size of a molecule of oleic acid 1 mL of oleic acid is dissolved in 19 mL of alcohol. Then 1 mL of this solution is diluted to 20 mL by adding alcohol. Now 1 drop of this diluted solution is placed on water in a shallow trough. The solution spreads over the surface of water forming one molecule thick layer. Now, lycopodium powder is sprinkled evenly over the film and its diameter is measured. Knowing the volume of the drop and area of the film we can calculate the thickness of the film which will give us the size of oleic acid molecule.

Read the passage carefully and answer the following questions:

  1. Why do we dissolve oleic acid in alcohol?
  2. What is the role of lycopodium powder?
  3. What would be the volume of oleic acid in each mL of solution prepared?
  4. How will you calculate the volume of n drops of this solution of oleic acid?
  5. What will be the volume of oleic acid in one drop of this solution?

According to the modern definition, what fraction of a second does light travel to define one metre?


Why is Earth's orbit used instead of its diameter to measure distances to stars using the parallax method?


In the parallax formula D = b/θ, what must be true about the angle θ for the calculation to be correct?


One parsec is defined as ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×