Question

1.Efectuati :
 a) 8,(7) - 3,(2)=
b) 11,(12) - 4,(23)=
c) 9,2(5) - 6,1(3)=
d)7,(8) - 3,4(5)=
 
2.EFECTUATI :
a) 0,42 ×10=
b)1,3×10=
c)17,5×100=
d)24,932×100=
e)7,21×1000=
f)1,2×400=
g)0,25×300
h)0,27×5000=0,4²

Answer 1

8,(7)-3,(2)=5,(5)
11,(12)-4,(23)=6,(8)
9,2(5)-6,1(3)=3,1(2)
7,(8)-3,4(5)=4,4(3)

0,42x10=4,2
1,3x10=13
17,5x100=1750
24,932x100=2493,2
7,21x1000=7210
1,2x400=480
0,25x300=75
0,27x5000=1350