Question

1215 и 1221 пожалуйста помогите

Answer 1

12151)
$0.18= frac{1}{10}+ frac{8}{100} = 0.1+0.08$
$0.315= frac{3}{10}+ frac{1}{100} + frac{5}{1000} = 0.3+0.01+0.005$
$0.14= frac{1}{10}+ frac{4}{100} = 0.1+0.04$
$0.222= frac{2}{10}+ frac{2}{100} + frac{2}{1000} = 0.2+0.02+0.002$
$0.8627= frac{8}{10}+ frac{6}{100} + frac{2}{1000}+ frac{7}{1000} = 0.8+0.06+0.002+0.0007$
2)
$2.9=2+ frac{9}{10} =2+0.9$
$4.61=4+ frac{6}{10} +frac{1}{100} =4+0.6+0.01$
$8.731=8+ frac{7}{10} +frac{3}{100}+frac{1}{1000} =8+0.7+0.03+0.001$
$6.44=6+ frac{4}{10} +frac{4}{100} =6+0.4+0.04$
$7.9312=7+ frac{9}{10} +frac{3}{100}+frac{1}{1000}+ frac{2}{10000} =7+0.9+0.03+0.001+0.0002$

1221.1)
$0.07=frac{7}{100}=0.07$
$0.421=frac{4}{10} +frac{2}{100}+frac{1}{1000}=0.4+0.02+0.001$
$0.083=frac{8}{100} +frac{3}{1000}=0.08+0.003$
$0.609=frac{6}{10} +frac{9}{1000}=0.6+0.009$
$0.0907=frac{9}{100} +frac{7}{10000}=0.09+0.0007$
2)
$3.11=3+frac{1}{10} +frac{1}{100}=3+0.1+0.01$
$2.021=2+frac{2}{100} +frac{1}{1000}=2+0.02+0.001$
$5.307=5+frac{3}{10} +frac{7}{1000}=5+0.3+0.007$
$31.4029=31+frac{4}{10} +frac{2}{1000}+frac{9}{10000}=31+0.4+0.002+0.0009$
$12.0303=12+frac{3}{100} +frac{3}{10000}=12+0.03+0.0003$

Answer 2

Поняла

Answer 3

Большое спасибо за помощь!