Question

5. The perimeter of our school ground is 348 75 metres. Every morning the sports teache
makes us walk four times around the ground. How much total distance do we cove
every day?
6. My father got 9 litres of petrol filled in his car. The price for petrol per litre
78.40. How much
money did
my father pay at the petrol pump?
Multiplication by 10, 100 and 1000
We know that when a whole number is multiplied by
(a) 10 → its value increases 10 times (b) 100 → its value increases 100 ti
(0) 1000 → its value increases 1000 times
Similarly, when we multiply a decimal by 10, 100 or 1000 its value also increases 10
100 times or 1000 times respectively
(b) Multiply 38.751 by 100
hu 10​

Answer 1

Perimeter of school field= 348.75 m

distance covered by the boys while taking 4 rounds of the field = 348.75 × 4 = 1395 m

hope it's helpful