fill (up) a vacancy

(1)15min = () hours (fill in decimal)

(2)7 hours and 39 minutes = () hours (fill in decimals)

(3) because ().

(4) (5)

(6) The quotient of two numbers is 0.95. Divider and divisor are expanded at the same time 10 times, and the quotient is (); If the divisor is enlarged by 100 times, the divisor should be () to keep the quotient unchanged.

(7) The () times of 0.7 is 1.75.

(8) In,,,,,, finite decimals have () and cyclic decimals have ().

(9) Cyclic decimal, the cycle segment is (), which is expressed as () in a simple way.

(10) The cycle segment of the cycle decimal is (), and the reserved two decimal places are about ().

(1 1),, and the order from small to large is ().

Second, the longitudinal calculation

36.8÷ 16 0.0 12 ÷0.25 12.6÷0.28

Third, off-model calculation.

9.4÷﹝0.96÷(5.4÷0.9)﹞ 1.6×(2.25+ 10.5÷ 1.5)

9÷﹝0.3×(8-6.5)﹞ 6. 17× 1.5+3.83× 1.5

Third, solve the problem.

(1) A classroom is 8.6 meters long and 4.5 meters wide. How many square bricks does it take to lay a floor of 0.2 square meters?

(2) Car A travels from City A to City B for 300 kilometers and 4.6 hours. How many kilometers per hour do you drive on average? (Figures shall be kept to two decimal places)

(3) Mom bought 1.5 Jin hairtail in the vegetable market and gave it to the salesgirl 1 1 yuan. Then she got back 0.95 yuan. How much is a catty of hairtail?

(4) A paving team paves for 25 hours 13m. According to this calculation, how many meters of pavement should be paved in 7.2 hours?

(5) 30 fruit popsicles per box, wholesale 22.5 yuan, 20 cream popsicles per box, wholesale 17.2 yuan. Retail price of cream popsicles 1.5 yuan, fruit popsicles 1.2 yuan. How much do you earn after each box is sold out?