口算:
6×7=________;9×9=________;3×6=________;2×6=________;8×3+4=________;41-2=________;6×9=________;8×5=________;7×2=________;7×5-3=________.
网友回答
42 81 18 12 28 39 54 40 14 32
解析分析:依据整数四则运算顺序,先算第二级运算,再算第一级运算求解.
解答:6×7=42,9×9=81,3×6=18,2×6=12,8×3+4=28,41-2=39,6×9=54,8×5=40,7×2=14,7×5-3=32.故