Zamien na dodawanie i oblicz :
a)-15-(-35)=-15+35=
b)-4-(-2,1)=.......+.....=
c)-111-(-624)=....+.....=
d)4,4-(-5)=....+....=...
e)-6-(-9 i 1/2)=.....+..;..=
Oblicz:
a)17-10=
17-(-10)=
-17-10=
-17-(-10)
b)-13-15=
-13-(-15)=
13-15=
13-(-15)=
c)3,75-4=
3,75-(-4)
-3,75-4=
-3,75-(-4)=
Oblicz:
a)-66-44=
45-54=
b)-9-(-64)
-111-333=
c)89-(-211)=
-7,5-(-2,5)=
Uzupełnij:
6-......=9
-4-......=1
-7-.........=-10
0-....=7
-(-6)=-9
-7,5-(-2,5)=
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Zamien na dodawanie i oblicz :
a)-15-(-35)=-15+35=50
b)-4-(-2,1)=4+2,1=6,1
c)-111-(-624)=111+624=537
d)-4,4-(-5)=4,4+5=9,4
a)-15-(-35)=-15+35=20mozna jeszcze tak zapisac 35-15=20
b)-4-(-2,1)=-4+2,1=-1,9 mozna jeszcze tak zapisac 2,1-4=-1,9
c)-111-(-624)=-111+624=513mozna jeszcze tak zapisac 624-111=513
d)4,4-(-5)=4,4+5=9,4
e)-6-(-9 i 1/2)=-6+9 1/2=3 1/2 mozna jeszcze tak zapisac 9 1/2-6=3 1/2
a)17-10=7
17-(-10)=17+10=27
-17-10=-27
-17-(-10)=-17+10=-7
b)-13-15=-28
-13-(-15)=-13+15=2
13-15=-2
13-(-15)=13+15=28
c)3,75-4=-0,25
3,75-(-4)=3,75+4=7,75
-3,75-4=-7,75
-3,75-(-4)=-3,75+4=,25
a)-66-44=-110
45-54=-9
b)-9-(-64)=-9+64=55
-111-333=-444
c)89-(-211)=89+211=300
-7,5-(-2,5)=-7,5+2,5=-5
6-...x...=9 <=> -x=9-6 <=> -x=3 <=> x=-3
-4-..x....=1 <=> -x=1+4 <=> -x=5 <=> x=-5
-7-..x..=-10 <=> -x=-10+7 <=> -x=-3 <=> x=3
0-..x..=7 <=> -x=7 <=> x=-7
-7,5-(-2,5)=-7,5+2,5=-5