How can this model be used to determine 1.6−0.32 ? Enter your answers in the boxes.
The model shows a total of 1 whole and 6 tenths. After regrouping 1 tenth into 10 hundredths, there is 1 whole,
tenths, and
hundredths. After crossing out 3 tenths and 2 hundredths, there is 1 whole,
tenths, and
hundredths remaining.

Statements reasons 1. ab ? cd; ad ? bc 1. given 2. ac ? ac 2. reflexive property 3. ? adc ? ? cba 3. ? 4. ? dac ? ? bca; ? acd ? ? cab 4. cpctc 5. ? dac and ? bca are alt. int. ? s; ? acd and ? cab are alt. int. ? s 5. definition of alternate interior angles 6. ab ? cd; ad ? bc 6. converse of the alternate interior angles theorem 7. abcd is a parallelogram 7. definition of parallelogram what is the missing reason in step 3?