1. (2021二上·南召期末) 7×7=         7×9=         9×6=         7×3+9=

8×6=         8×8=         9×9=         72+5-30=

5×5=         9+17=        5×9=         8×7-12=

90-6=         7×6=         3×8=         8×5+19=