Hebei education publishing house fifth grade final examination paper mathematics 1. Fill in the blank: the product of (20%) 1 and 4.5×0.9 is (), and one decimal place is (). 2. The decimal representation of the business cycle of11÷ 6 is (), and the number of decimal places is (). 3.36000 square meters = () hectares 5.402 kilograms = () kilograms () grams 2 kilometers 7 meters = () kilometers () hours =2 hours 45 minutes 4. Fill in ○...9 1 15.