7.Aruna and Radha start their journey from two different places. A and E. Aruna chose the path from A to B then to C, while Radha chose the path from E to D then to C.
Find who travelled more and by how much?
8.Upendra went to the market to buy vegetables. He brought 2 kg 250 gm tomatoes, 2 kg 500 gm potatoes, 750 gm lady fingers and 125 gm green chillies. How much weight did Upendra carry back to his house?
Rajendra of class 7 went with his mother to the bazar to buy vegetables. There they purchased 2.5 kg potatoes at the rate of 8.50 per kg. How much money do they need to pay?
We come across various situations in day-to-day life where we need to know how to multiply two decimals. Let us now learn the multiplication of two decimal numbers.
Let us first multiply- 0.1 × 0.1
0.1 means one part of 10 parts. This is represented as 1/10 using fractions
and pictorially in Fig.1.
Thus, 0.1 × 0.1 = 1/10×1/10 which means 1/10 of 1/10. So here we are
the 10th part of 1/10 . Thus, we divide 1/10into 10 equal parts and
take one part. This is represented by one square in Figure 2. How many squares are there in Figure 2? There are 100 squares. So one square represents one out of 100 or 0.01. So we can conclude
pg no:46