口算练习 36
1
1+9=
9+1=
10-9=
2+8=
7+2=
10-2=
10-8=
3+7=
7+3=
10-7=
10-3=
3+5=
4+5=
2
10-0=
0+10=
4+6=
3+7=
1+9=
8-5=
6+4=
10-9=
5+5=
10+0=
10-6=
10-1=
10-4=
3
7+3=
10-7=
10-6=
5+5=
10-3=
8+2=
9+1=
6+4=
3+7=
2+8=
4+6=
9-4=
10-5=
1
1+9=
10
9+1=
10
10-9=
1
2+8=
10
7+2=
9
10-2=
8
10-8=
2
3+7=
10
7+3=
10
10-7=
3
10-3=
7
3+5=
8
4+5=
9
2
10-0=
10
0+10=
10
4+6=
10
3+7=
10
1+9=
10
8-5=
3
6+4=
10
10-9=
1
5+5=
10
10+0=
10
10-6=
4
10-1=
9
10-4=
6
3
7+3=
10
10-7=
3
10-6=
4
5+5=
10
10-3=
7
8+2=
10
9+1=
10
6+4=
10
3+7=
10
2+8=
10
4+6=
10
9-4=
5
10-5=
5
答案:
1. $1 + 9 = 10$
$9 + 1 = 10$
$10 - 9 = 1$
$2 + 8 = 10$
$7 + 2 = 9$
$10 - 2 = 8$
$10 - 8 = 2$
$3 + 7 = 10$
$7 + 3 = 10$
$10 - 7 = 3$
$10 - 3 = 7$
$3 + 5 = 8$
$4 + 5 = 9$
2. $10 - 0 = 10$
$0 + 10 = 10$
$4 + 6 = 10$
$3 + 7 = 10$
$1 + 9 = 10$
$8 - 5 = 3$
$6 + 4 = 10$
$10 - 9 = 1$
$5 + 5 = 10$
$10 + 0 = 10$
$10 - 6 = 4$
$10 - 1 = 9$
$10 - 4 = 6$
3. $7 + 3 = 10$
$10 - 7 = 3$
$10 - 6 = 4$
$5 + 5 = 10$
$10 - 3 = 7$
$8 + 2 = 10$
$9 + 1 = 10$
$6 + 4 = 10$
$3 + 7 = 10$
$2 + 8 = 10$
$4 + 6 = 10$
$9 - 4 = 5$
$10 - 5 = 5$
$9 + 1 = 10$
$10 - 9 = 1$
$2 + 8 = 10$
$7 + 2 = 9$
$10 - 2 = 8$
$10 - 8 = 2$
$3 + 7 = 10$
$7 + 3 = 10$
$10 - 7 = 3$
$10 - 3 = 7$
$3 + 5 = 8$
$4 + 5 = 9$
2. $10 - 0 = 10$
$0 + 10 = 10$
$4 + 6 = 10$
$3 + 7 = 10$
$1 + 9 = 10$
$8 - 5 = 3$
$6 + 4 = 10$
$10 - 9 = 1$
$5 + 5 = 10$
$10 + 0 = 10$
$10 - 6 = 4$
$10 - 1 = 9$
$10 - 4 = 6$
3. $7 + 3 = 10$
$10 - 7 = 3$
$10 - 6 = 4$
$5 + 5 = 10$
$10 - 3 = 7$
$8 + 2 = 10$
$9 + 1 = 10$
$6 + 4 = 10$
$3 + 7 = 10$
$2 + 8 = 10$
$4 + 6 = 10$
$9 - 4 = 5$
$10 - 5 = 5$
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