3rd Class Mathematics Measurement Length, Weight and Capacity Measurement

                                                                Measurement

Introduction

Measurement is the elementary information about everything. The term measurement is derived from the Latin word measure. Length, weight and volume are measured in appropriate units. SI unit stands for International system for units. Conversion of Measuring Units Length, weight and Volume

Conversion between Meters and Centimeters

Following are the steps for the conversion of meters into centimeters and centimeters into meters.

Step 1: Meters are converted into centimeters multiplying by 100.

Step 2: Centimeters are converted into meters dividing by 100.

• Example

Convert 225 meters into centimeters.

(a) 22500cm                  (b) 4500cm

(c) 2250cm                    (d) All the above

(e) All of these

Answer (a)

Explanation: 1 meter = 100 centimeter so, 225 meter = 22500 centimeters.

Conversion of Kilometers and Meters

Following are the steps for the conversion of kilometers into meters.

Step 1: Convert kilometers into meters by multiplying the number of kilometers by 1,000 (1 km = 1,000 meters).

Step 2: Convert the kilometers and meters into meters by multiplying the number of kilometers by 1,000 and then add the number of meters.

• Example

Convert 6 km 340 m in centimeters.

(a) 657800 cm                (b) 625000 cm

(c) 634000cm                 (d) All the above

(e) None of these

Answer (c)

Explanation: 6 km 340 m = 6340 m = 634000 cm.

Addition of two Masses

Following are the steps for the addition of two or more masses.

Step 1: Arrange the measured masses vertically kg under kg and grams under grams.

Step 2: Add them by simple addition method starting from right.

Step3: If carry is generated then add generated carry to the next addition.

• Example

52 kg 760 grams and 42 kg 700 grams.

(a) 35 kg 700 grams        (b) 95 kg 460 grams

(c) 70 kg 200 grams         (d) 115 kg 100 grams

(e) None of these

Answer (b)

Explanation:

\[52\text{ }kg\text{ }760\text{ }grams+42\text{ }kg\text{ }700\text{ }grams\]

\[=95\text{ }kg\text{ }460\text{ }grams.\]