4+1+3=
5+1+2=
3+2+2=
9-3-4=
7-3-2=
6-1-3=
8-3+4=
7-4+5=
3+6-7=
4+2-3=
5+3-4=
6-1+2=
1+7-3=
8-2-4=
8
5+1+2=
8
3+2+2=
7
9-3-4=
2
7-3-2=
2
6-1-3=
2
8-3+4=
9
7-4+5=
8
3+6-7=
2
4+2-3=
3
5+3-4=
4
6-1+2=
7
1+7-3=
5
8-2-4=
2
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依次计算即可。
答案:
4 + 1 + 3 = 8
5 + 1 + 2 = 8
3 + 2 + 2 = 7
9 - 3 - 4 = 2
7 - 3 - 2 = 2
6 - 1 - 3 = 2
8 - 3 + 4 = 9
7 - 4 + 5 = 8
3 + 6 - 7 = 2
4 + 2 - 3 = 3
5 + 3 - 4 = 4
6 - 1 + 2 = 7
1 + 7 - 3 = 5
8 - 2 - 4 = 2
答案:
4 + 1 + 3 = 8
5 + 1 + 2 = 8
3 + 2 + 2 = 7
9 - 3 - 4 = 2
7 - 3 - 2 = 2
6 - 1 - 3 = 2
8 - 3 + 4 = 9
7 - 4 + 5 = 8
3 + 6 - 7 = 2
4 + 2 - 3 = 3
5 + 3 - 4 = 4
6 - 1 + 2 = 7
1 + 7 - 3 = 5
8 - 2 - 4 = 2
1+8=
2+7=
3+6=
3+5=
4+5=
6+1=
6+3=
1+5=
2+6=
4+4=
5+2=
5+1=
5+4=
6+2=
4+3=
7+2=
8+1=
1+3=
3+3=
2+4=
7+1=
9
2+7=
9
3+6=
9
3+5=
8
4+5=
9
6+1=
7
6+3=
9
1+5=
6
2+6=
8
4+4=
8
5+2=
7
5+1=
6
5+4=
9
6+2=
8
4+3=
7
7+2=
9
8+1=
9
1+3=
4
3+3=
6
2+4=
6
7+1=
8
答案:
1+8=9
2+7=9
3+6=9
3+5=8
4+5=9
6+1=7
6+3=9
1+5=6
2+6=8
4+4=8
5+2=7
5+1=6
5+4=9
6+2=8
4+3=7
7+2=9
8+1=9
1+3=4
3+3=6
2+4=6
7+1=8
2+7=9
3+6=9
3+5=8
4+5=9
6+1=7
6+3=9
1+5=6
2+6=8
4+4=8
5+2=7
5+1=6
5+4=9
6+2=8
4+3=7
7+2=9
8+1=9
1+3=4
3+3=6
2+4=6
7+1=8
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