Question

Find the product by suitable rearrangement
a) $125\times 40\times 8\times 25$
b) $285\times 5\times 60$

Answer 1

a) $125\times 8\times 25\times 40=1000\times 1000=1000000$

b) $285\times 5\times 60=285\times 60\times 5=17100\times 5=85500$