问:
笔算,并验算(1)1.06×44.24(2)43.5÷0.29150
答:
这里给出这两道笔算题的详细解答过程:
(1) 1.06×44.24
1) 1.06 = 1 + 0.06 = 106% (百分比表示)
2) 44.24 = 参与运算的数量
3) 106% × 44.24 = 106/100 × 44.24 = 0.106 × 44.24 = 4.68744 = 4.69(四舍五入取整)
所以,1.06×44.24 = 4.69
(2) 43.5÷0.29150
1) 43.5 = 被除数
2) 0.29150 = 除数
3) 43.5 ÷ 0.29150 = 43.5/0.29150 = 149.3973 = 149.4(四舍五入取整)
所以,43.5÷0.29150 = 149.4
综上,这两道笔算题的结果为:
(1) 1.06×44.24 = 4.69
(2) 43.5÷0.29150 = 149.4
以下给出详细的验算过程:
(1) 1.06×44.24
1.06 = 1 + 0.06 = 106% = 1.06
44.24 × 1.06 = 44.24 × (1 + 0.06) = 44.24 × 1.06 = 46.88744 = 46.89(四舍五入取整)
所以,1.06 × 44.24 = 46.89(与笔算结果4.69不同,笔算有误)
(2) 43.5÷0.29150
0.29150 = 29.15% = 0.2915
43.5 / 0.2915 = 43.5 ÷ 0.2915 = 149.398 = 149.4(四舍五入取整)
所以,43.5÷0.29150 = 149.4(与笔算结果一致,笔算正确)
综上, (1)1.06×44.24的笔算结果有误,正确结果为46.89;(2)43.5÷0.29150的笔算结果正确。
verification试算过程仅供参考,如有不妥之处,请指出。谢谢!