1. 直接写得数。
386 + 214 = 612 ÷ 6 = 1.25 × 2.4 =
4.6 + 0.54 = 64 + 5.6 = 0.125 × 8 =
1 ÷ 10% = 4 × 25% = 5 - 2.65 =
$\frac{2}{3}+\frac{3}{4}=$ 2.8 × 0.5 = 312 - 297 =
$\frac{5}{8}\div20=$ $\frac{2}{5}\div40\%=$ $\frac{9}{7}\div\frac{3}{14}=$
$\frac{1}{2}\times\frac{3}{5}\div\frac{1}{2}\times\frac{3}{5}=$ $\frac{3}{7}\div\frac{1}{6}\times\frac{2}{5}\div\frac{3}{7}=$
386 + 214 = 612 ÷ 6 = 1.25 × 2.4 =
4.6 + 0.54 = 64 + 5.6 = 0.125 × 8 =
1 ÷ 10% = 4 × 25% = 5 - 2.65 =
$\frac{2}{3}+\frac{3}{4}=$ 2.8 × 0.5 = 312 - 297 =
$\frac{5}{8}\div20=$ $\frac{2}{5}\div40\%=$ $\frac{9}{7}\div\frac{3}{14}=$
$\frac{1}{2}\times\frac{3}{5}\div\frac{1}{2}\times\frac{3}{5}=$ $\frac{3}{7}\div\frac{1}{6}\times\frac{2}{5}\div\frac{3}{7}=$
答案
2. 用递等式计算。
5.6 ÷ 0.7 × 1.5 15.28 - (7.69 + 5.28)
(1 ÷ 3 - $\frac{1}{5}$) × 15 ($\frac{3}{5}-\frac{1}{5}$) ÷ $\frac{2}{7}\times\frac{5}{6}$
5.6 ÷ 0.7 × 1.5 15.28 - (7.69 + 5.28)
(1 ÷ 3 - $\frac{1}{5}$) × 15 ($\frac{3}{5}-\frac{1}{5}$) ÷ $\frac{2}{7}\times\frac{5}{6}$
答案
3. 某商场四月份的营业额是150万元,比三月份的营业额增长了$\frac{1}{5}$。三月份的营业额是多少万元?
答案
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