Question

question number 18 as given in pic

Answer 1

Dear friend, ^ means power.
Answer:-
.10^6 =1000000
3 kg of sugar contains 8 × 10^6 crystals.
=3 kg of sugar contains 8 × 1000000 crystals.
=3 kg of sugar contains 8000000 crystals.

So, 3 kg of sugar = 8000000 crystals.
=1 kg of sugar = (8000000÷3) crystals
=1 kg of sugar = 2666666.66 crystals

i)
1 kg of sugar = 2666666.66 crystals
=5 kg of sugar = (2666666.66×5) crystals
=5 kg of sugar = 13333333.33 crystals
ii)
We know that 1 kg = 1000 gram
So, 500 gram = 0.5 kg
So, 0.5 kg = 500 gram

1 kg of sugar = 2666666.66 crystals
=1÷2 kg of sugar = (2666666.66÷2) crystals
=0.5 kg of sugar = 1333333.33 crystals
So, (0.5×3) kg sugar =(1333333.33×3) crystals
=1.5 kg sugar =3999999.99 crystals