Слайд 8+1=
+2=
+3=
-1=
+4=
-3=
-2=
-4=
+5-4
+5-3
+4-5
+3-5
+5-2
+2-5
+5-1
+1-5

Слайд 9+1=
+2=
+3=
-1=
+4=
-3=
-2=
-4=
-9+10
-8+10
-10+9
-10+8
-7+10
-10+7
-6+10
-10+6
+5=
-5+10
-5=
-10+5

Слайд 10+9=
+8=
-9=
-1+10
-2+10
-10+1
-10+2
-8=
+7=
-3+10
-7=-10+3
+6=-4+10
-6=-10+4
