536÷4=134;
1 3 4
45 3 6
4
1 3
1 2
1 6
1 6
0
423÷5=84…3;
8 4
54 2 3
4 0
2 3
2 0
3
620÷6=103…2;
1 0 3
66 2 0
6
2 0
1 8
2
62×25=1550;
6 2
×2 5
.
3 1 0
1 2 4
1 5 5 0
验算:
6 2
251 5 5 0
1 5 0
5 0
5 0
0
33×21=693;
3 3
×2 1
.
3 3
6 6
6 9 3
70×28=1960;
2 8
×7 0
.
1 9 6 0
134+89=223;
1 3 4
+8 9
.