Example:
4+ (-5) = -1
- -5 -4 -3 -2 -1 0 1 2 3 4 $
1. (-7) + 10 =
0 +1 +2 +3 +4 +5 +6 +7 +8+9.
10 -8 – 7 6 5 4 3 2 1
年十
- ||
+1 +2 +3 +4 +5 +6 +7 +8 +9
2. (-10) + 17 =
-10 -9 -8 -7 -6 -5 4 -3 -2 -1
--
3. (-4) + (-3) =
10 -9 -8 -7 -6 -5 4 -3 -2 -1
+1 +2 +3 +4 +5 +6 +7 +8 +9
++++
4.-7-1-3) =
- 10 9 8 7 6 5 4 3 2 1
0
+1 +2 +3 +4 +5 +6 +7 +8 +9
||||||||||
-
5.3 -(-6) =
-10-9-8-7 -6 -5 4 -3 -2
||||||
0 +1+2 +3 +4 +5 +6 +7 +8+9
丹
4+ (-5) = -1
- -5 -4 -3 -2 -1 0 1 2 3 4 $
1. (-7) + 10 =
0 +1 +2 +3 +4 +5 +6 +7 +8+9.
10 -8 – 7 6 5 4 3 2 1
年十
- ||
+1 +2 +3 +4 +5 +6 +7 +8 +9
2. (-10) + 17 =
-10 -9 -8 -7 -6 -5 4 -3 -2 -1
--
3. (-4) + (-3) =
10 -9 -8 -7 -6 -5 4 -3 -2 -1
+1 +2 +3 +4 +5 +6 +7 +8 +9
++++
4.-7-1-3) =
- 10 9 8 7 6 5 4 3 2 1
0
+1 +2 +3 +4 +5 +6 +7 +8 +9
||||||||||
-
5.3 -(-6) =
-10-9-8-7 -6 -5 4 -3 -2
||||||
0 +1+2 +3 +4 +5 +6 +7 +8+9
丹
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Answer:
1.(-7)+10=+3
2.(-10)+17=+7
3.(-4)+(-3)=-7
4.-7-1-3)=+3
5.3-(-6)=+18