竖式计算.2.37+1.25=;4.36+2.4=;39.04+3.28=验算45.6+34.98=;46.19-23.

1个回答

  • 解题思路:根据四则运算的计算法则计算即可求解.注意39.04+3.28,31.5×24.5和84.01÷31要进行验算.

    2.37+1.25=3.62;

    4.36+2.4=6.76;

    39.04+3.28=42.32(验算)

    45.6+34.98=80.58;

    46.19-23.7=22.49;

    31.5×24.5=771.75(验算)

    0.63×1.05=0.6615;

    0.24×1.5=0.36;

    84.01÷31=2.71(验算)

    点评:

    本题考点: 小数的加法和减法;整数的除法及应用;小数乘法.

    考点点评: 考查了四则运算,关键是熟练掌握计算法则正确进行计算.