Odpowiedź :
1.
a) 5+2=7
b) 3 3/4 + 5 = 8 3/4
c) 5+5+5 = 15
d) 1 1/2 + 5 + 1 1/2 = 8
2. a)
P kwadrata = a *a
p = 8*8=64
b) P prostokąta a* b
P = 8 * 4 1/2 = 16
a) 5+2=7
b) 3 3/4 + 5 = 8 3/4
c) 5+5+5 = 15
d) 1 1/2 + 5 + 1 1/2 = 8
2. a)
P kwadrata = a *a
p = 8*8=64
b) P prostokąta a* b
P = 8 * 4 1/2 = 16
5. a=5
a) a + 2 = 5 + 2 = 7
b) 3 ¾ + a = 3 ¾ + 5 = 8 ¾
c) 3•a = 3 • 5 = 15
d) 1 ½ + a + 1 ½ = 1 ½ + 5 + 1 ½ = 2 ½ + 5 = 7 ½
6. y = 8
x = 4 ½
a) P = y² = 8² = 64 j²
b) P = x • y = 4 ½ • 8 = 9/2 • 8/1 = 36 j²