You know
mass 
You will cognize
units of mass 
Recapitulation
Mass is the measure of affair in an object. In mundane use, the mass of an object is referred to as its weight. The weight of an object tells us how heavy or light it is.
We use a balance or graduated table to step and comparison weights. To weigh things utilizing a balance, we need standard weights.
Unit of measurements to mensurate mass
We usegmsfor mensurating lighter objects andkgsfor mensurating heavier objects.
Example: 5 gms is written as 5 g and 2 kg is written as 2 kilogram.
Here are two types of weighing scale shown. A weighing graduated table has two pans.
The deliberation pans will be at the same degree when the weights in both the pans are equal. 
The deliberation pans are non at the same degree when the weights in both the pans are unequal. 
Some of the commonly used weights

Few other types of graduated tables to mensurate weight ( movie will be given by Amrita/Indira )
Exercise: 8.1
Write the right unit to mensurate each of the followers.
a. Mass of aureate ring 
_________ 
B. Mass of lucifer box 
_________ 
c. Mass of school bag full of books 
_________ 
d. Mass of football 
_________ 
Comparison of units of measuring of mass
1000 g = 1 kilogram 
So, kg is a larger unit and gm is a smaller unit.
Therefore,.
Exercise 8.2
1. Fill in the spaces with & A ; lt ; , & A ; gt ; , = .
a. 
B. 
degree Celsiuss. 
vitamin D. 
vitamin E. 
degree Fahrenheit. 
2. Write the undermentioned measurings in go uping order.
15 kilogram, 450 g, 78 g, 5 kilogram, 62 g, 150 g 
3. Write the undermentioned measurings in falling order.
3 kilogram, 743 kilogram, 50 g, 12 kilogram, 750 g, 125g 
Conversion of Unit of measurements of Mass
Kilograms into gms
Example 1:Convert 2 kilogram into gm.
Kilograms and gms into gms
Example 2:Convert 2 kg 700 g into kgs
Measure 1:First multiply 2 by 1000.

Measure 2:Now add 700 to 2000. 
Therefore, 2kg 700 g = 2700 g. 

Grams into kgs
Example 1:Convert 7000 g into kgs.
7000 g = 70001000 
Therefore, 7000 g = 7 kilogram 
Grams into kgs and gms
Example 2:Convert 3450 g into kgs.
To change over 3450 g into kg, divide 3450 by 1000. 3450 g = 34501000 = 3 kg 450 g 
Therefore, 3450 g = 3 kilogram 450 g. 
Exercise 8.3
a. 2 kilogram 
B. 5 kilogram 
c. 7 kilogram 
d. 4 kilogram 
a. 3 kg 379 g 
B. 6 kg 190 g 
c. 9 kilogram 240 g 
d. 8 kilogram 29 g 
a.8000 g 
B.6000 g 
degree Celsiuss.3000 g 
vitamin D.7000kilogram 
4. Convert the undermentioned gm into kg and gm.
a. 3430 g 
B. 4631 g 
c. 1489 g 
d. 7560 g 
e. 6232 g 
f. 2259 g 
g. 9589 g 
h. 2195 g 
It is convenient to state 1kg alternatively of 1000 g, likewise 9256 g as 9 kilogram and 256 g.
In daytoday life we have to be speedy with transition. Hence, to change over gms into kg and gm merely divide the last three figures. These are grams the remainder of the figures are kgs.
Example: Convert 3745 g into kilogram and g.
Measure 
kilogram 
g 
Measure 
kilogram 
g 

a. 
1000 g 
B. 
2000 g 

degree Celsiuss. 
2005 g 
vitamin D. 
650 g 

vitamin E. 
2345g 
degree Fahrenheit. 
345 g 

g. 
8700 g 
H. 
5425 g 

I. 
750 g 
J. 
9035 g 
Addition and minus utilizing units of mass
We have learnt addon and minus of same units of measuring of mass. Let us revise.
a. 250 g + 455 g

B. 591 g – 378 g

c. There are 555 g of apples and 225g grapes in the fruit bowl. Find the entire weight of the fruits in the fruit bowl. 



Autonomic nervous system: Therefore, the entire weight of the fruits in the fruit bowl is 780 g. 
d. Manu had 625 kilograms wheat stored in the godown. He sold 345 kilogram of wheat this hebdomad. How much wheat is left in his godown? 



Autonomic nervous system: Therefore, wheat left in the godown is 280 kilogram. 
Exercise 8.4
1. Solve.
a.

B.

degree Celsiuss.

vitamin D.

2. Arrange vertically and work out.
a.63 g + 32 g 
B.294 kilogram + 510 kilogram 
degree Celsiuss.283 g – 191 g 
vitamin D.450 kilogram – 39 kilogram 
3. Narrative amounts
a. 
Rajni bought 500 g of Anacardium occidentale nuts and 450 g of Prunus dulcis. What is the entire weight of the points that she bought? 
B. 
The babe bear weighed 2 kilogram a twelvemonth ago. Its weight increased. Now it weighs 4 kilogram. How much weight has it gained? 
Basic Operations utilizing different units of Mass
Addition
Addition of measurings utilizing units of mass is similar to addon of Numberss.
Example1:Add 3 kg 540 g and 4 kilograms 250 g. ( without reorganizing )


Therefore, 3 kilogram 540 g + 4 kilogram 250 g = 7 kilogram 790 g 
`
Example 2:Add 2 kg 425 g and 1 kilograms 775 g. ( With regrouping )



425 g + 775 g = 1200 g We know 1000 g = 1 kilogram Therefore 1200 g = 1 kilogram 200 g Write 200 g under the g column and carry over 1 to the kilogram column 




Subtraction
Subtraction of measurings utilizing units of mass is similar to minus
of Numberss.
Example 1:Subtract 6 kilogram 434 g from 7 kilograms 576 g. ( Without reorganizing )
Therefore, 7 kilogram 576 g – 6 kilogram 434 g = 1 kilogram 142 g. 

Example 2:Subtract 5 kilogram 450 g from 8 kilograms 135 g. ( With regrouping )



Since we can non deduct 450 g from 135 g we borrow 1 kilogram or 1000 g from 8 kilograms go forthing 7kg behind in the‘kg’column Now in the grams column we have 1000 g + 135 g = 1135 g 1135 g – 450 g = 685 g Write 685 g under the g column 


Therefore, 8 kilogram 135 g – 5 kilogram 450g = 2 kilogram 685 g 

Exercise 8.5
1. Add.
a. 
kilogram 
g 
B. 
kilogram 
g 
degree Celsiuss. 
kilogram 
g 
vitamin D. 
kilogram 
g 

1 
543 
5 
856 
6 
625 
41 
159 

+ 
3 
389 
+ 
6 
225 
+ 
3 
620 
+ 
20 
804 

vitamin E. 
kilogram 
g 
degree Fahrenheit. 
kilogram 
g 
g. 
kilogram 
g 
H. 
kilogram 
g 

3 
106 
1 
314 
65 
718 
57 
002 

+ 
5 
157 
+ 
2 
992 
+ 
23 
248 
+ 
43 
050 

2. Subtract.
a. 
kilogram 
g 
B. 
kilogram 
g 
degree Celsiuss. 
kilogram 
g 
vitamin D. 
kilogram 
g 

2 
684 
3 
246 
67 
607 
350 
314 

– 
1 
526 
– 
2 
188 
– 
35 
316 
– 
325 
413 

vitamin E. 
kilogram 
g 
degree Fahrenheit. 
kilogram 
g 
g. 
kilogram 
g 
H. 
kilogram 
g 

6 
981 
9 
809 
8 7 
028 
981 
00 

– 
1 
639 
– 
5 
030 
– 
1 9 
146 
– 
184 
50 

3. Arrange vertically and work out.
a. 2 kg 452 g + 7 kilogram 525 g 
B. 1 kg 175 g + 4 kilogram 110 g 
c. 12 kilogram 405 g + 50 kilogram 193 g 
d. 661kg 541 g + 231kg 102 g 
e. 8 kg 312 g – 3 kilogram 150 g 
f. 6 kg 656 g – 1kg 450 g 
g. 85kg 750 g – 39 kilogram 536 g 
h. 232 kilogram 470 g – 131 kilograms 127g 
Generation with units of mass
Generation utilizing units of mass is same as simple generation. Write the units of measuring and multiply as usual.
Example1:Multiply 153kg by 2.
Therefore, 153 kilogram ? 2 = 306 kilogram. 
Example 2:Multiply 885 g by 7 and express in kilogram and g. & lt ;Request RemovalIf you are the original author of this essay and no longer wish to hold the essay published on the UK Essays web site so delight chink on the nexus below to bespeak remotion: No related essays. Recent Posts
