问题
解答题
前三题得数保留两位小数:
0.76×1.12≈
1.78×0.24≈
0.56×1.07≈
2.4+7.6×4.3
8.2×0.94×0.5
0.48×8.5-2.5.
答案
0.76×1.12≈0.85;
1.78×0.24≈0.43;
0.56×1.07≈0.60;
2.4+7.6×4.3
=2.4+32.68
=35.08;
8.2×0.94×0.5
=7.708×0.5
=3.854;
0.48×8.5-2.5
=4.08-2.5
=1.58.