1.8 + 2.2 = 4.8 + 1.1 = 4.3 + 0.6 =
0.7 + 0.8 = 6.8 - 1.2 = 0.36 + 0.21 =
0.95 - 0.32 = 1.1 - 0.9 = 2.5 - 2.5 =
1.04 + 0.71 = 7.3 + 3.7 = 1.88 + 2.01 =
0.7 + 0.8 = 6.8 - 1.2 = 0.36 + 0.21 =
0.95 - 0.32 = 1.1 - 0.9 = 2.5 - 2.5 =
1.04 + 0.71 = 7.3 + 3.7 = 1.88 + 2.01 =
答案:
4 5.9 4.9 1.5 5.6 0.57 0.63 0.2 0 1.75 11 3.89
计算下面各题并验算。
6.3 - 3.6 = 7.3 + 4.9 = 4.06 + 5.94 =
8.55 - 6.44 = 6.42 - 2.46 = 0.54 + 1.52 =
0.7 + 1.9 = 9.9 + 9.9 = 4.32 - 2.95 =
6.3 - 3.6 = 7.3 + 4.9 = 4.06 + 5.94 =
8.55 - 6.44 = 6.42 - 2.46 = 0.54 + 1.52 =
0.7 + 1.9 = 9.9 + 9.9 = 4.32 - 2.95 =
答案:
2.7 12.2 10 2.11 3.96 2.06 2.6 19.8 1.37
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