豎式計算并且驗算
(1)8.52+1.36=
(2)6-1.37=
(3)2.52÷0.12=
(4)8.7×0.67=
解:(1)8.52+1.36=9.88,
驗算:
(2)6-1.37=4.63;
驗算:
(3)2.52÷0.12=21;
驗算:
(4)8.7×0.67=5.829,
驗算:
分析:本題要運用小數(shù)的加減乘除運算的計算法則,小數(shù)的加減要把小數(shù)點對齊,做小數(shù)的乘法積的小數(shù)位數(shù)是各因數(shù)小數(shù)位數(shù)的和,小數(shù)的除法先把除數(shù)變成整數(shù),再按照小數(shù)的除法進行計算.
點評:本題要運用小數(shù)的加減乘除運算的計算法則的運用.