Fill in the blanks, (20 points, 2 points for each small question).

1.3 25 24 60 2. 10︰ 1 1 3.0.3 4.75%

5.25 6.900 7.20 24 8.28.26 18.84

9.5 78.5 10.24︰25

2. True or false, 5 points, 65438+ 0 point for each small question.

1.× 2.× 3.√ 4。 √ 5.×

Third, multiple-choice questions, (5 points, 65438+ 0 points for each small question).

1.A 2。 B 3。 C 4 explosive B 5。 A

Four, calculation (26 points)

1. Write numbers directly, (5 points, 0.5 points for each small question).

2. Solve the equation, (6 points, 2 points for each small question).

X-X = X \u= X \u= 15×

Solution: X=( 1) solution: X÷×=×( 1) solution: X÷= 10( 1).

X =( 1)X =( 1)X =( 1)

3. Recursive equation calculation, (18 points, 3 points for each small question).

÷(-) × ÷( - )

=( 1.5 point) =×( 1 point)

= (1.5 point) =⊙( 1 point)

= ( 1)

× - ÷5 6÷ - ÷6

= ×× ( 1) = 6×× ( 1)

=×(-) (1 min) =20- (1 min)

= ( 1) = ( 1)

× ÷(+ )×

=36×+× (1 min) =⊙×( 1 min)

=9+ ( 1) =× × ( 1)

= ( 1) = ( 1)

4. Formula (or equation) calculation, (6 points, 3 points for one question), half formula and calculation.

( 1)( + )÷( - )=

(2) 120× 20% = 450 can also be solved by the equation.

Five, look at the picture to solve the problem

1. Every empty point. (5 points)

( 1)B(7，8) C(9，3) D(3，4)

(2)A(0，6) C(6， 1)

2.4. Column, calculation, half each.

Circumference 3. 14×6= 18.84 (cm) (2 points)

The area is 6×6-3. 14×(6÷2)2=7.74 (square centimeter) (2 points).

Six, solve the problem (26 points) formula, each half.

1(.4 points). 1500×( 1- )=600 (tree)

2.(4 o'clock) 5400( 1-20%)= 6750 (ton)

3.(4 points) 20000×4.25%×3+20000=22550 (yuan)

4.(4 points) 30÷2= 15 (cm) 15+ 1= 16 (cm)

3.14× (162-152) = 97.34 (square centimeter)

5.(4 points) 40×2×3. 14=25 1.2 (cm)

6.(6 points) 2 points for each small question)

①12 ÷ (1-20%-25%-45%) =120 (person)

② 120×(45%-25%)=24 (person)

③(25%-20%)÷20%=25%

Additional questions, 5 points for each question.

1. Chess 16, Checkers 1 1.

2. (40-25) ÷ (1-) =120 (ton)