①925÷25=37;
3 7
25
9 2 5
7 5 1 7 5
1 7 5 0
②425×32=13600;
4 2 5
×
3 2
8 5 0
1 2 7 5 1 3 6 0 0
③11.36+8.54=19.9.
1 1.3 6
+
8.5 4
1 9.9 0
验算:
1 9.9 0
?
8.5 4
1 1.3 6