Category: Name:
First, write the number directly. (10)
1.8-0.5= 1.3 0. 18+0.6=0.78 0.25? 40= 10 0.39? 0.3= 1.3
0.3? 0.5=0. 15 0.36? 0.04=9 0.072? 100=7.2 53.8? 100=5380
3. 14? 1000= 3 140 43.2 1? 100=0.432 1
Second, fill in the blanks. (22 points)
1, an apple weighs about 0.74 kg, and 4 of 0.74 is in the (percentage) position, which means (4) apples (0.0 1).
2,3.7 includes (37) 0. 1.
3, (0.0526) expanded to the original 1000 times is 52.6.
4.0. 1275275 is a (cyclic) decimal and can be written as (0. 1275? Draw dots on 2 and 7? ), one decimal place is (0. 1).
5. After a coat is reduced by one yuan, the original price in 93 yuan is (93+a) yuan.
6. From small to large, it is 4.65, 4.56, 4.065, 4.605, and the second is (4.56).
7. 5 cents and 3 cents =(0.53) yuan and 0.7 hours =(42) cents? 1 =60 points, so 0.7? 60?
8.4 kg 20g =(4.02) kg 4.07m =(4) m (7) cm。
8. Fill in the brackets? & gt？ 、? & lt？ Or? =? .
8.72? 0.99(& lt； ) 8.72 23.56? 0.93(& lt； ) 23.56
6.8? 1.9(>) 6.8 43.7? 0. 1(>) 43.7
9. In the triangle ABC? A=25？ ,? B=65？ ,? C=(90 degrees), which is a (right angle) triangle.
10. In the following line segment, (②), (③) and (④) can be used to form a triangle.
① 1cm ② 2cm ③ 3cm ④ 4cm
Third, multiple choice questions. (10)
1 is not equation (b) in the following categories.
a、x+5= 10 B、9+ 12x C、5y=380
2. Which of the following figures? 0? The number that cannot be deleted is (d).
a、7. 10 B、25.00 C、2.30 D、6000
3. Among the following groups of line segments (unit: cm), the one that cannot form a triangle is (c).
a、2、3、3 B、2、3、4 C、2、4、6
4. In the figure below, the one with stability is (a).
B.C.
5. In the picture on the right, the shape of the object is (A) when viewed from the front.
B.C.
Fourth, the calculation problem. (20 points)
1, calculation. (12)
5.0 1- 1.9+4.99 12.7+ 12.5? 0.5
=5.0 1+4.99- 1.9 = 12.7+25
= 10- 1.9 =37.7
=8. 1
0.65? 6.4-0.65? 5.4 96? ( 15.4- 12.2)
=0.65 ? (6.4-5.4 ) =96? 3.2
=0.65 ? 1 =30
=0.65
2. Solve the equation. (8 points)
x？ 2.5 = 10 7x-4x = 4.8 5x-3.9 = 5. 1 8m？ 4= 15
Solution: x= 10? 2.5 solution: 3x=4.8 solution: 5x=5. 1+3.9 solution: 8m= 15? four
x=4 x=4.8？ 3 5x=9 8m=60
x= 1.6 x=9？ 5 m=60？ eight
X =1.8m =7.5.
5. Fill in the blanks and draw a picture. (12)
1, there are (10) triangles in the figure below. 2. below? A= 77 degrees
3. Draw on the bitmap as required.
Parallelogram trapezoid right triangle isosceles triangle
Sixth, solve the problem. (26 points)
24.5? 2=49 (yuan) 24.5? 2= 12.25 (yuan)
(49+ 12.25)? 2
=6 1.25? 2
= 122.5 (yuan)
38? 5=7.6 (yuan)
Dad bought 9.5 Jin of apples and gave them to the salesman for 30 yuan. He got back 7.20 yuan. How much are apples per kilogram?
30-7.2=22.8 (yuan) 22.8? 9.5=2.4 (yuan)
Xiao Liang: 3 1-3=28 (points) Xiao Hong: 3 1+5=36 (points) 36? 2= 18 (yuan)
5, solve the problem of the equation.
A loaf of bread, 2.8 yuan? Bottles, each bottle of 2.5 yuan.
*** 15.3 yuan
2.8+2.5x= 15.3
Solution: 2.5x= 15.3-2.8
2.5x= 12.5
x= 12.5？ 2.5
x=5
230-80= 150 (yuan) 150? 5=30 (yuan)