Practice problem
Which number's expanded form is: 3×0.01+1×0.001+9×0.00013\times0.01 + 1 \times 0.001 + 9\times 0.00013×0.01+1×0.001+9×0.0001
0.1390.1390.139
0.001390.001390.00139
0.03190.03190.0319
0.013090.013090.01309
Type a concept, like “slope” or “photosynthesis”.
