measurements4

Measurement Measurement

By Abha AroraBy Abha Arora

How large is a millimeter?How large is a millimeter?

The widthof a pin

How large is a centimeter?How large is a centimeter?

The widthof the top

of your finger

How large is a meter?How large is a meter?

About the width

of one & 1/2 doors

1 meter

How large is a kilometer?How large is a kilometer?

A little over1/2 of a

mile

1 kilometer

AVB SCHOOL

PATPARGANJ DEPOT

How large is a milliliter?How large is a milliliter?

About adrop ofliquid

How large is a liter?How large is a liter?

Half of aLarge coke

bottle 1liter

How heavy is a gram?How heavy is a gram?

A paper clipweighsabout 1

gram

How heavy is a kilogram?How heavy is a kilogram?

A kittenweighsabout 1

kilogram

HOW TO DRAW A LINE HOW TO DRAW A LINE SEGMENT SEGMENT

■ TO DRAW A LINE SEGMENT OF 4 ½ CMTO DRAW A LINE SEGMENT OF 4 ½ CM

■ STEP 1: mark a point on a blank sheet of STEP 1: mark a point on a blank sheet of paperpaper

■ STEP 2: keep the scale with the zero mark at STEP 2: keep the scale with the zero mark at the point. Hold the scale firmly with left hand.the point. Hold the scale firmly with left hand.

■ STEP 3:STEP 3: use the other hand to draw a line use the other hand to draw a line from the point along the edge of scale to the from the point along the edge of scale to the mark halfway between 4 cm and 5cm.mark halfway between 4 cm and 5cm.

This line measures 4.5 cmThis line measures 4.5 cm

0 1 2 3 4 5 6

TO DRAW A LINE SEGMENT OF TO DRAW A LINE SEGMENT OF 4.7 cm4.7 cm

■ STEP 1: SAME AS BEFORESTEP 1: SAME AS BEFORE■ STEP 2: SAME AS BEFORESTEP 2: SAME AS BEFORE

0 1 2 3 4 5 6 7

STEP 3: draw a line from 1 to 5,it will make 4 cm and then count small lines upto 7. this will make 4.7 cm

CONVERSIONSCONVERSIONS

■ WE KNOW,WE KNOW,1000 g = 1 kg1000 g = 1 kg1 kg = 500 g + 500 g1 kg = 500 g + 500 g500 g= 250 g + 250 g 500 g= 250 g + 250 g

it means,it means,1 kg = (250 g + 250 g)+(250 g +250 g ) 1 kg = (250 g + 250 g)+(250 g +250 g )

= 4 x 250 g= 4 x 250 g1 kg = 10 x 100 g1 kg = 10 x 100 g

EXPRESSING cm to mEXPRESSING cm to mWE KNOW

100 cm = 1 m

THIS MEANS

500 cm = 5 m

700 cm = 7 m

475 cm = 400 cm + 75 cm

= 4m 75 cm

789 cm = 700 cm + 89 cm

= 7 m 89 cm

EXPRESSING m to cmEXPRESSING m to cm

1 m = 100 cm1 m = 100 cm

THIS MEANS,THIS MEANS,5 m = 500 cm5 m = 500 cm2 m = 200 cm2 m = 200 cm

8 m = 800 cm8 m = 800 cm1m 80 cm = 100 cm + 80 cm1m 80 cm = 100 cm + 80 cm

= 180 cm= 180 cm

MORE EXAMPLESMORE EXAMPLES

6 m 45 cm = 600 cm + 45 cm6 m 45 cm = 600 cm + 45 cm

= 645 cm= 645 cm3 m 6 cm = 300 cm + 6 cm3 m 6 cm = 300 cm + 6 cm

= 306 cm= 306 cm

9 m 9 cm = 900 cm + 9 cm9 m 9 cm = 900 cm + 9 cm= 909 cm= 909 cm

EXPRESSING m to kmEXPRESSING m to km

We know ,We know ,

1000 m = 1 km1000 m = 1 kmSo,So,

2000 m = 2 km2000 m = 2 km

7000 m = 7 km7000 m = 7 km4000 m = 4 km4000 m = 4 km

MORE EXAMPLESMORE EXAMPLES

7358 m = 7000 m + 358 m7358 m = 7000 m + 358 m = 7 km 358 m= 7 km 358 m

4309 m = 4000 m + 309 m4309 m = 4000 m + 309 m = 4 km 309 m= 4 km 309 m

2500 m = 2000 m + 500 m2500 m = 2000 m + 500 m = 2 km 500m= 2 km 500m

EXPRESSING km to mEXPRESSING km to m

If 1000 m = 1 km , then 500 m = ½ kmIf 1000 m = 1 km , then 500 m = ½ km

So,So,5 ½ km = 5 km + ½ km5 ½ km = 5 km + ½ km

= 5000 m + 500 m= 5000 m + 500 m =5500 m=5500 m

MENTAL MATHSMENTAL MATHS

Express in m :Express in m :■ A)A) 200 cm200 cm■ B)B) 909 cm909 cm■ C)C) 751 cm751 cm■ D)D) 430 cm430 cm

Express in cmExpress in cm

■ A)A) 9 m9 m■ B)B) 8m 47 cm8m 47 cm■ C)C) 6 m 9 cm6 m 9 cm■ D)D) 8 m 1 cm8 m 1 cm

Express in kmExpress in km

■ A)A) 6000 m6000 m■ B)B) 7100 m7100 m■ C)C) 4325 m4325 m■ D)D) 8920 m8920 m

Express in mExpress in m

■ A)A) 6 km6 km■ B)B) 9 ½ km9 ½ km■ C)C) 5 ½ km5 ½ km■ D)D) 2 km2 km

Application in real lifeApplication in real life

Que:Que:Rakesh walked 470 m from his Rakesh walked 470 m from his house to the market and back again . house to the market and back again . What distance did he walk in all?What distance did he walk in all?

house

M

A

R

K

E

T

470 m

470 m

Answer to questionAnswer to question

■ This means in total Rakesh walked This means in total Rakesh walked ( 470 + 470 ) m( 470 + 470 ) m

= 940 m= 940 m

Rakesh walked 940 m in all.Rakesh walked 940 m in all.

QuestionQuestion

Pooh jogged 5 times around a park that had a path Pooh jogged 5 times around a park that had a path of length 400 m. how many km did he jog?of length 400 m. how many km did he jog?

PATH 400 m

Answer to questionAnswer to question

In one round he covered 400 m and he In one round he covered 400 m and he took 5 such rounds.took 5 such rounds.

So,So, distance covered by him in 5 rounds distance covered by him in 5 rounds will be 400 m x 5 = 2000 m = 2 kmwill be 400 m x 5 = 2000 m = 2 km

QuestionQuestion

Rani has 9 stamps that Rani has 9 stamps that are each 3 cm long. are each 3 cm long. Will all 9 stamps fit Will all 9 stamps fit into a single row into a single row across a stamp across a stamp album that is 24 cm album that is 24 cm across ?across ?

Across ( 24 cm)

3cm 3 cm 3 cm 3 cm 3cm 3 cm 3 cm 3 cm

If we place 8 stamps side by side , then it covers 24 cm. this means if we place 1 more stamp , then it will go out of the book.

ANSWER: NO, ALL 9 STAMPS WOULD NOT FIT ACROSS

THE ENDTHE END