oblicz1/5×6/10= 1 3/4÷0,4= 3/8-0,15 2/5÷0,08=

1/5 * 6/10 = 6/50 = 3/25 1 3/4 : 0,4 = 7/4 : 4/10 = 7/4 * 10/4 = 70/16 = 35/8 = 4 3/8 3/8 - 0,15 = 3/8 - 15/100 = 3/8 - 3/20 = 15/40 - 6/40 = 9/40 2/5 : 0,08 = 2/5 : 8/100 = 2/5 * 100/8 = 200/40 = 5

pierwsze 9/15 drugie 33/5 trzecie 3/65 czwarte 31/25