Question

using various properties find the value of the following two three marks with method a) 631×10×467–367×6310
b) 7265×7265–7265 ×265​

Answer 1

a . 631×10×467 - 367×6310.

2,946,770 - 2,315,770

631,000

b . 7265×7265 - 7265×265

52,780,225-1,925,225

50,855,000