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5. 根据27×36 = 972，直接写出下面各题的得数。
972÷27 = 972÷3.6 = 0.27×36 =
9.72÷0.36 = 2.7×0.36 = 97.2÷2.7 =
0.036×2.7 = 270×3.6 = 0.972÷0.27 =
0.27×0.36 = 972÷0.36 = 27×0.36 =
972÷27 = 972÷3.6 = 0.27×36 =
9.72÷0.36 = 2.7×0.36 = 97.2÷2.7 =
0.036×2.7 = 270×3.6 = 0.972÷0.27 =
0.27×0.36 = 972÷0.36 = 27×0.36 =
答案
6. 用竖式计算。（带★的要验算。）
★187 + 674 = 4.56×2.5 = ★28.84÷2.8 =
44.28÷2.05 = ★102.8 + 0.82 = 9.437 - 0.25 =
2.58×5.7 = ★0.539÷5.5 = 792 - 457 =
★187 + 674 = 4.56×2.5 = ★28.84÷2.8 =
44.28÷2.05 = ★102.8 + 0.82 = 9.437 - 0.25 =
2.58×5.7 = ★0.539÷5.5 = 792 - 457 =
答案
7. 用合适的方法计算下面各题。
298 + 24×76 - 1027 18÷$\frac{3}{5}×\frac{5}{24}+2$
$\frac{1}{4}÷(54 - \frac{8}{9}÷\frac{1}{54})$ 1.3×29 - (8.46 + 0.24)
24×[($\frac{11}{8}-\frac{3}{4}$)×8] 9÷[1 - ($\frac{2}{5}+\frac{9}{20}$)]
298 + 24×76 - 1027 18÷$\frac{3}{5}×\frac{5}{24}+2$
$\frac{1}{4}÷(54 - \frac{8}{9}÷\frac{1}{54})$ 1.3×29 - (8.46 + 0.24)
24×[($\frac{11}{8}-\frac{3}{4}$)×8] 9÷[1 - ($\frac{2}{5}+\frac{9}{20}$)]
答案
