1. 比一比，看谁算得又对又快

14＋4 =      16－5 =       9＋6 =       7＋9 =       10＋10 = 

19－8 =      3＋7 =        5＋10 =      13－6 =       11－5 = 

16－9 =      8＋8 =        3＋14 =      17－8 =       7＋6 =

7＋7 =       12－8 =       15－8 =      8＋3 =        11－4 =