Вычислите произведение удобным а) 36 x 25 = b) 25 x 12 = d) 75 x 24 = z) 150 x 42 =

A) 36·25 = 36·(20+5) = 36·20+36·5 = 720+180 = 900

B) 25·12 = 25·(10+2) = 25·10+25·2 = 250+50 = 300

C) 75·24 = 75·(20+4) = 75·20+75·4 = 1500+300 = 1800

Z) 150·42 = 150·(40+2) = 150·40+150·2 = 6000+300 = 6300