Question

Oblicz .

a. ] 3/10 × 2/15

b. ] 4/8 × 11/40

c. ] 2 1/2 × 10

d. ] 15/50 ÷ 3/4

e. ] 3/6 ÷ 4/10

f. ] 5/10 × 8/40

Answer 1

. ] 3/10 × 2/15= 6/ 150 = 0,04

b. ] 4/8 × 11/40=44/ 320=0,1375

c. ] 2 1/2 × 10= 2,5*10=25

d. ] 15/50 ÷ 3/4 =15/50*4/3=60/150=0,4

e. ] 3/6 ÷ 4/10=3/6*10/4=30/24= 1,25

f. ] 5/10 × 8/40 =40/400=0,1

Answer 2

A) 3/10 x 2/15 = 1/25
b) 4/8 x 11/40 = 11/80
c) 2 1/2 x 10 = 5/2 x 10/1 = 25/1 = 25
d) 15/50 : 3/4 = 15/50 x 4/3 = 20/50
e) 3/6 : 4/10 = 3/6 x 10/4 = 15/12 = 1 3/12 = 1 1/4
f) 5/10 x 8/40 = 4/40 = 1/10