Question

Calculati:a)12•35 b)35•25 c)128•45 d)324•15 e)37•35•12 f)16•26•14

Answer 1

e)37•35•12=37•420=15540

f)16•26•14=416•14=5824

Answer 2

a) 12 • 35 =  420

12 × ( 30 + 5 ) = 12 × 30 + 12 × 5 = 360 + 60 = 420

b)   35 • 25 = 875

35 × ( 20 + 5 ) = 35 × 20 + 35 × 5 = 700 + 175 = 875

c)  128 • 45 = 5 760

d)  324 • 15= 4 860

e)   37 • 35 • 12 = 37 × 420 = 15 540

f)   16 • 26 • 14 = 5 824