14．填表．
| 被减数 | 969 | 402 | 304 |
| 减数 | 587 | 153 | 146 |
| 差 | 382 | 249 | 158 |
13．用竖式计算下列各题，带“*”的式子进行验算．
| 504-389= | 604+439= | 80÷9= |
| 33÷7= | *600-158= | *497+287= |
12．开心速算，我最棒．
0 137896 137904 137910 137914 137920 137922 137926 137932 137934 137940 137946 137950 137952 137956 137962 137964 137970 137974 137976 137980 137982 137986 137988 137990 137991 137992 137994 137995 137996 137998 138000 138004 138006 138010 138012 138016 138022 138024 138030 138034 138036 138040 138046 138052 138054 138060 138064 138066 138072 138076 138082 138090 199269
| 73-37= | 20×4= | 0÷2= | 40÷5= |
| 63÷9= | 850+70= | 10×65= | 360+430= |
| 0×78= | 300×3= | 180+300= | 50×3= |
| 720-300= | 48÷8= | 740-60= | 65+0= |
| 42÷6+18= | 7×8-56= | 6×4+16= | 80-15+35= |
