Tony's calculator correctly shows 3.4 x 0.5=1.7. Explain why the number of decimal places in the product is not the same as the number of decimal places in the two factors.

3.4*0.5=1.7 add how many times you skipped to put the decimal in like:
2.5+6.3= 2.5 is one decimal place and 6.3 is one decimal place which equals two so the answer would be 8.80 which equals 2 decimal places altogether