Question

14kg 300g , 18kg 400g , 19kg 800g , 20kg 200g , 22kg 600g , 25kg 700g ( find the average of each of the following )
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Answer 1

Answer:

In subtraction of mass we will learn how to find the difference between the units of mass or weight. While subtracting we need to follow that the units of mass i.e., kilogram and gram are converted into grams before subtraction and then follow the simple subtraction process.

We can subtract units of mass like ordinary numbers.

We will learn two different methods to solve subtraction using the standard unit and smaller unit of mass. Students can practice both the methods.

(i) Subtracting units with conversion into gram

(ii) Subtracting units without conversion into gram

Worked-out examples on subtraction of mass:

1. Subtract 11 kg 460 g from 25 kg 765 g

Solution:

Method 1 (with conversion into gram):

We know, 1 kg = 1000 grams

Now kg and g are converted into grams before doing subtraction and then we need to follow the simple subtraction process.

11 kg 460 g = (11 × 1000) g + 460 g = 11000 g + 460 g = 11460 grams

25 kg 765 g = (25 × 1000) g + 765 g = 25000 g + 765 g = 25765 grams

Now sum,

             25765 g

        -   11460 g

            14305 g

                     = 14 kg 305 g

Therefore, 25 kg 765 g - 11 kg 460 g = 11 kg 305 g 

Answer 2

Answer:

Step-by-step explanation:i