(1)325×45=14625;
325
×45
1625
1300
14625;
(2)884÷26=34;
34
26
884
78
104;
104
0;
(3)907×21=19047;
907
×21
1814
19047;
(4)906÷78=11…48;
11
906
126
48;
(5)370×42=15540;
370
×42
74
148
15540;
驗算:
42
×370
294
(6)6440÷28=230;
230
28
6440
56
84
×28
184
46
6440.
(1)325×45=14625;
325
×45
1625
1300
14625;
(2)884÷26=34;
34
26
884
78
104;
104
0;
(3)907×21=19047;
907
×21
907
1814
19047;
(4)906÷78=11…48;
11
78
906
78
126
78
48;
(5)370×42=15540;
370
×42
74
148
15540;
驗算:
42
×370
294
126
15540;
(6)6440÷28=230;
230
28
6440
56
84
84
0;
驗算:
230
×28
184
46
6440.