2.37 + 3.5 = 7.5 + 5.5 = 8.36 + 3.42 =
760×20 = 33.52 - 3.42 = 12.83 - 6.52 =
8800÷40 = 491 + 3.9 = 4.1 + 3.43 =
5.2 - 2.5 = 750÷100 = 80 + 128 =
760×20 = 33.52 - 3.42 = 12.83 - 6.52 =
8800÷40 = 491 + 3.9 = 4.1 + 3.43 =
5.2 - 2.5 = 750÷100 = 80 + 128 =
答案:
5.87 13 11.78 15200 30.1 6.31
220 494.9 7.53 2.7 7.5 208
220 494.9 7.53 2.7 7.5 208
1. 阴影部分占整个图形的几分之几?

答案:
1. $\frac{1}{4}$ $\frac{3}{4}$ $\frac{1}{2}$
2. 计算下面各题,能简算的要简算。
4.28 + 3.67 + 1.26 0.33 + 9.41 + 0.67 17.8 - 3.28 - 0.32
37.2 - 3.59 + 4.41 10.72 + 0.7 - 8.24 3.26 + 1.2 + 0.74 + 11.8
4.28 + 3.67 + 1.26 0.33 + 9.41 + 0.67 17.8 - 3.28 - 0.32
37.2 - 3.59 + 4.41 10.72 + 0.7 - 8.24 3.26 + 1.2 + 0.74 + 11.8
答案:
2. 9.21 10.41 14.2 38.02 3.18 17
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