4+2+3=
7-2-3=
9-3+2=
8-4+5=
1+6-4=
2+5-3=
3+2+2=
5-4+6=
6+3-5=
7-2-1=
2+7-5=
8-3-4=
3+6-7=
9-2-5=
7-2-3=
9-3+2=
8-4+5=
1+6-4=
2+5-3=
3+2+2=
5-4+6=
6+3-5=
7-2-1=
2+7-5=
8-3-4=
3+6-7=
9-2-5=
答案:
解析:这些题目都是基础的加减法运算,考查的是对加减法的基本运算能力和顺序的理解。按照从左到右的顺序进行计算即可。
答案:
4 + 2 + 3 = 9
7 - 2 - 3 = 2
9 - 3 + 2 = 8
8 - 4 + 5 = 9
1 + 6 - 4 = 3
2 + 5 - 3 = 4
3 + 2 + 2 = 7
5 - 4 + 6 = 7
6 + 3 - 5 = 4
7 - 2 - 1 = 4
2 + 7 - 5 = 4
8 - 3 - 4 = 1
3 + 6 - 7 = 2
9 - 2 - 5 = 2
答案:
4 + 2 + 3 = 9
7 - 2 - 3 = 2
9 - 3 + 2 = 8
8 - 4 + 5 = 9
1 + 6 - 4 = 3
2 + 5 - 3 = 4
3 + 2 + 2 = 7
5 - 4 + 6 = 7
6 + 3 - 5 = 4
7 - 2 - 1 = 4
2 + 7 - 5 = 4
8 - 3 - 4 = 1
3 + 6 - 7 = 2
9 - 2 - 5 = 2
4+3-2=
7-4+3=
4+3+2=
7-4-3=
8-2+3=
5+4-7=
8-2-4=
5-4+7=
7+2-3=
4+2-3=
7-2+3=
4+2+1=
3+3+3=
2+2+2=
5
7-4+3=
6
4+3+2=
9
7-4-3=
0
8-2+3=
9
5+4-7=
2
8-2-4=
2
5-4+7=
8
7+2-3=
6
4+2-3=
3
7-2+3=
8
4+2+1=
7
3+3+3=
9
2+2+2=
6
答案:
4+3-2=5
7-4+3=6
4+3+2=9
7-4-3=0
8-2+3=9
5+4-7=2
8-2-4=2
5-4+7=8
7+2-3=6
4+2-3=3
7-2+3=8
4+2+1=7
3+3+3=9
2+2+2=6
7-4+3=6
4+3+2=9
7-4-3=0
8-2+3=9
5+4-7=2
8-2-4=2
5-4+7=8
7+2-3=6
4+2-3=3
7-2+3=8
4+2+1=7
3+3+3=9
2+2+2=6
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