1. (2019二上·龙泉驿期末) 口算。

24+35=           4×5=           35÷5=

18÷3=             3×4=           34-20=

48+11=           63+17=           7×8=

8÷2=               6×7=             96-47=

14+32=           5×6=              81÷9=

72÷8=            36-6=              75-63=

54÷6=            20÷4=             6×9=

3×7=             25÷5=              2×8=

68-2=             75-63=            72÷9=

15÷3=            2×3=              6×1=