Zadanie 13
a).
15-35 = 15+(-35) = -20
-37-10 = -37+(-10) = -47
b).
4 1/2-8 = 4 1/2+(-8) = -3 1/2
-7,25-9 = -7,25+(-9) = -16,25
Zadanie 15
a).
18-10 = 8
18-(-10) = 18+10 = 28
-18-10 = -28
-18-(-10) = -18+10 = -8
b).
-14-12 = -26
-14-(-12) = -14+12 = -2
14-12 = 2
14-(-12) = 14+12 = 26
c).
2,75-5 = -2,25
2,75-(-5) = 2,75+5 = 7,75
-2,75-5 = -7,75
-2,75-(-5) = -2,75+5 = 2,25
Zadanie 14
b) -6 + 2 = -4
c) -110 + 656 = 546
d) 4,1 + 6 = 10,1
e) -5 + 9,3 = 4,3
Zadanie 16
a.) -99, 27
b.) 64, -622
c.) 500, -5,5
zadanie 17
a)
3 - (-5) = 8
-5 - (- 8) = 3
b)
-8 - 2 = -10
0 - (- 9) = 9
c)
-14 - (- 6) = -8
-7 - (-7) = 0
wszystko dobrze, liczę na naj! :)
