( 1)779.5 1 , 780 ; (2) 1,20 ; 2.25 or 214; (3)5,6,48,25

(4) 15 ; 18 (5) 165 (or 16:5), 3.2 (6) 4,48 (7)120.

(8)95, 10; (9) 160, 149; ( 10) 18.84 , 2 1.98。

Second, judge. (65438+ 0 point for each question, ***5 points) ×; √; √; ×; ×

Third, choose. (65438+ 0 point for each question, ***5 points) a; c； b； a； B

Fourth, calculate the following questions, which can be easily calculated by simple methods. (3 points for each question, *** 18 points)

Scoring reference: if the calculation process is correct but the result is wrong, deduct 1 point; The third question is not simple but the result is correct, and 1 point will be deducted.

( 1)490; (2)7.4; (3)35 ; (4) 16 ;

5. Solution ratio or equation. (3 points for each question, ***6 points)

Scoring reference: 1 If the solution process is correct but the result is wrong, points will be deducted; if the solution is not written, points will not be deducted.

( 1)X=6 (2)X=0.5

6. Calculate the shadow area below. (***4 points)

Scoring reference: If the formula is correct, points will be deducted if the result is wrong. S=9.87 cm2

7. Draw a picture and fill it in as required. (***8 points)

( 1)B( 1，2)； C(4，5)； (2) Omission (3) Omission (4)4.5

The second part to solve the problem (***40 points)

8. Fill in the blanks. (2 points for each question, ***8 points) (1) 38%, (2) 3∶5, (4) Focus interview, (4)33.

Nine, scoring reference: allow algorithm diversification; Deduct 1 minute if the formula is correct but the result is wrong; The seventh question is useless but the result is correct, 2 points will be deducted. The eighth question does not retain a decimal point deduction of 1 minute, and 2 points will be deducted for errors caused by inconsistent units. Answers and units that have not been written will not be deducted temporarily.

(1) 14 hours; ②9 kg ③3.8 tons; (4)240 copies;

(5) 20% discount (6) can be reached; (7) 192, (8)58.9 meters.