用计算器求下列各式的值:
(1)24.12×2+3.452×4.2;(精确到0.1); (2)(2.42﹣1.32)×3.1+4.13;(精确到0.01)
解:(1)24.12×2+3.452×4.2,
=1211.6105,
≈1211.6;
(2)2.42﹣1.32)×3.1+4.13,
=81.538,
≈81.54.